Thumbnails are question marks in CKFinder window

Hello all!
I am having the same issue with the thumbnails showing only with question marks. I am using the CKFinder version 1.1 with ColdFusion 8, on a Windows server. I've tried with IE8 and Firefox 2.0 with no luck.

My config in config.cfm is the following:

config.thumbnails = structNew();
config.thumbnails.url = 'http://www.alterheros.com/thumbnails/';
config.thumbnails.baseDir = 'c:/websites/134459jt7/thumbnails/';
config.thumbnails.enabled = true;
config.thumbnails.maxWidth = 100;
config.thumbnails.maxHeight = 100;
config.thumbnails.quality = 80;

Hello,

All issues with creating thumbnails in PHP have been fixed in CKFinder 1.1.

Now regarding ColdFusion version: I was unable to reproduce this error, so I would like to ask you to follow those simple steps described below and hopefully we'll both solve this issue.
Please launch "Live HTTP headers" or "Tamper Data" extension (in Firefox) to trace all HTTP requests.
Thumbnails are created with the following command:

http://example.com/ckfinder/core/connector/cfm/connector.cfm?command=Thumbnail&type=Images&currentFolder=%2F&FileName=IMG_0316.jpg

Hi,

I am experiencing the same problem as Marc-O (mercure) with the Coldfusion version, but I am running the demo version (no license purchased yet).
We're running Coldfusion 8 and I haven't changed the config.thumbnails settings.
Wiktor - I have removed the cfcatch statements in the two files as you've suggested. When I reload the URL, I get the following response in IE7:

<Connector>
<Error number="104"/>
</Connector>

Hope this helps.
Thanks for your help.

Glenn.

Sorry for taking so long to reply. This is something I can't reproduce.
It looks to me that CKFinder is unable to create the thumbnails directory. To be sure that this is the problem, in core\connector\cfm\CommandHandler\Thumbnail.cfc paste the following:

<cfif not fileSystem.createDirectoryRecursively(thumbPath, 0755, true)>
   <cfdump var="Path: #thumbPath#">
   <cfabort>
   <cfthrow errorcode="#REQUEST.constants.CKFINDER_CONNECTOR_ERROR_ACCESS_DENIED#" type="ckfinder">
</cfif>

instead of:

      
<cfif not fileSystem.createDirectoryRecursively(thumbPath, 0755, true)>
      <cfthrow errorcode="#REQUEST.constants.CKFINDER_CONNECTOR_ERROR_ACCESS_DENIED#" type="ckfinder">
</cfif>

and open the url with the Thumbnail command once again. If the path is displayed, instead of previous XML message, it means that web server can't create the directory for thumbnails.

Hello, I have followed all the instructions for the issue and i am definately getting a file permission issue however, I dont' understand as to why.

We are on cf8 using sandboxing. I have given permission to the directories properly in the sandbox and I don't have trouble uploading or deleting files from the images directory it just doens't create the thumbnails. Also I have noticed that when an image is uploaded it keeps it in the temp directory on the server rather than moving it out after it has been uploaded.

C:\JRun4\servers\cfusion\SERVER-INF\temp\cfusion.war-tmp\
is keeping a copy of the file after uploading this should actually be removed after placing it in the site folder.

Any solutions for veiwing the images would be greatly appreciated if I can actually get this to work on one site then will be getting a Corporate Web Sites license but really need the ability to do view the thumbnails.

thanks.

Tigerlady: did you follow my suggestion postend on: Tue Feb 26, 2008 6:54 pm?
Is the fileSystem.createDirectoryRecursively function responsible for not returning thumbnails?

If you add this code, is the thumbPath displayed in the response message?

<cfif not fileSystem.createDirectoryRecursively(thumbPath, 0755, true)>
   <cfdump var="Path: #thumbPath#">
   <cfabort>
   <cfthrow errorcode="#REQUEST.constants.CKFINDER_CONNECTOR_ERROR_ACCESS_DENIED#" type="ckfinder">
</cfif>

Wiktor,

I have tried this but it doesn't create the dump... for some reason the dump of the path doesn't work and now I am not seeing any files at all weither it be as a list or question marks.

I am uploading the Live Http Headers and generator files. Now it is seeing the image folder and I can upload to the directory. It actually puts the files on the server in the correct spot. Just cannot create folders or see the images anymore.

ok I just downloaded and installed fiddler and here is what I am getting.
<?xml version="1.0" encoding="UTF-8"?>
<Connector resourceType="Images"><Error number="0"/><ConnectorInfo c="" enabled="true" s="" thumbsEnabled="true"/><ResourceTypes><ResourceType acl="224" allowedExtensions="gif,jpeg,jpg,png" defaultView="Thumbnails" deniedExtensions="bmp" name="Images" url="/media/images/"/></ResourceTypes></Connector>

<?xml version="1.0" encoding="UTF-8"?>
<Connector resourceType="Images"><Error number="103"/><CurrentFolder acl="224" path="/" url="/media/images/"/></Connector>

<?xml version="1.0" encoding="UTF-8"?>
<Connector resourceType="Images"><Error number="103"/><CurrentFolder acl="224" path="/" url="/media/images/"/></Connector>

Edited 4:01 pm:

Ok i did some more digging and realized that some of my code was missing to even view the thumbnails.

config.baseUrl = "/media/";

config.baseDir = APPLICATION.CreateCFC("Utils.FileSystem").resolveUrl(config.baseUrl);

config.thumbnails = structNew();
config.thumbnails.url = config.baseUrl & 'thumbs';
config.thumbnails.baseDir = "/images/";
config.thumbnails.enabled = true;
config.thumbnails.maxWidth = 100;
config.thumbnails.maxHeight = 100;
config.thumbnails.quality = 80;

config.accessControl[3] = structNew();
config.accessControl[3].role = '*';
config.accessControl[3].resourceType = 'Images';
config.accessControl[3].folder = '/';
config.accessControl[3].folderView = true;
config.accessControl[3].folderCreate = true;
config.accessControl[3].folderRename = true;
config.accessControl[3].folderDelete = true;
config.accessControl[3].fileView = true;
config.accessControl[3].fileUpload = true;
config.accessControl[3].fileRename = true;
config.accessControl[3].fileDelete = true;

Then these are the responses I get back.

<?xml version="1.0" encoding="UTF-8"?>
<Connector resourceType="Images"><Error number="0"/><ConnectorInfo c="" enabled="true" s="" thumbsEnabled="true"/><ResourceTypes><ResourceType acl="255" allowedExtensions="gif,jpeg,jpg,png" defaultView="Thumbnails" deniedExtensions="bmp" name="Images" url="/media/images/"/></ResourceTypes></Connector>

<?xml version="1.0" encoding="UTF-8"?>
<Connector resourceType="Images"><Error number="0"/><CurrentFolder acl="255" path="/" url="/media/images/"/><Folders><Folder acl="255" hasChildren="true" name="thumbnails"/></Folders></Connector>

<?xml version="1.0" encoding="UTF-8"?>
<Connector resourceType="Images"><Error number="0"/><CurrentFolder acl="255" path="/" url="/media/images/"/><Files><File date="200802271613" name="02501.jpg" size="3"/><File date="200802271613" name="025011.jpg" size="6"/><File date="200802271356" name="02507.jpg" size="2"/><File date="200802271723" name="03001.jpg" size="2"/><File date="200802271723" name="030011.jpg" size="8"/><File date="200803071642" name="DSC00738.jpg" size="15"/><File date="200803101101" name="DSC00742.jpg" size="10"/><File date="200803101120" name="mobile 001.jpg" size="33"/></Files></Connector>

<?xml version="1.0" encoding="UTF-8"?>
<Connector><Error number="1" text="access denied (java.io.FilePermission \images\Images read)"/></Connector>

Once again let me stress that I have turned on Sandboxing. I have tried everything from root right down to the directory to allow read write capabilities for this site. Still nothing seems to work properly.

It looks to me that you have accidentally set incorrect permissions.
ACL 224 means: File delete + File rename + File upload.
To be able to browse files you need also: folderView and fileView. fileView permission is also required to create thumbnails.

So first thing we need to de before debugging this thumbnail issue, is to grant all permissions to your test user to be sure that we have appropriate ACL settings.

our postings must have crossed as you can see i did go and add those and now i am getting a java file permission issue.

Ok, so we have found the error: "access denied (java.io.FilePermission \images\Images read)".
I'll try to reproduce it tomorrow and we should have it fixed soon, thanks!

There is one more thing that you could try:
Copy the url of the command that sent this error and open it in your browser.
java.io.FilePermission is not as helpful as detailed exception iformation, so let's change the code a bit to get the whole exception:
Comment out the catch "any" statements:

<cfcatch type="any">
...
</cfcatch>

in connector.cfm, Connector.cfc, CommandHandler/XmlCommandHandlerBase.cfc.
You should be able to see the detailed exception information (assuming that "Enable Robust Exception Information" is checked).

Debugging Information ColdFusion Server Enterprise

8,0,0,176276

Template

/console/ckfinder/core/connector/cfm/connector.cfm

Time Stamp

10-Mar-08 05:25 PM

Locale

English (US)

User Agent

Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; WOW64; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506; Media Center PC 5.0; .NET CLR 1.1.4322)

Remote IP

74.94.102.1

Host Name

74.94.102.1

. Total Time

Avg Time

Count

Template

109 ms

109 ms

1

E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\connector.cfm

78 ms

78 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\Connector.cfc | executeCommand(Init) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\Connector.cfc

47 ms

47 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\CommandHandler\Init.cfc | sendResponse() ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\CommandHandler\Init.cfc

31 ms

31 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\CommandHandler\Init.cfc | buildXml() ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\CommandHandler\Init.cfc

16 ms

16 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc | getComputedMask(Images, /) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Application.cfc | onRequestStart(/console/ckfinder/core/connector/cfm/connector.cfm) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Application.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc | addACLEntry(*, *, /, [complex value], [complex value]) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc | addACLEntry(*, Files, /, [complex value], [complex value]) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc | addACLEntry(*, Images, /, [complex value], [complex value]) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc | mergePathComputedMask(0, Images, , /) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\AccessControlConfig.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\Config.cfc | getResourceTypeConfig(Images) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\Config.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Utils\FileSystem.cfc | FixUrl(/media/images) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Utils\FileSystem.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Utils\FileSystem.cfc | combinePaths(E:/Websites/MyDomain.com/www, /media/) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Utils\FileSystem.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Utils\FileSystem.cfc | resolveUrl(/media/) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Utils\FileSystem.cfc

0 ms

0 ms

1

CFC[ E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Utils\Misc.cfc | TrimChar(/, /) ] from E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Utils\Misc.cfc

0 ms

0 ms

1

E:\Websites\MyDomain.com\www\console\ckfinder\config.cfm

0 ms

0 ms

1

E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\constants.cfm

0 ms

0 ms

1

E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\createcfc.udf.cfm

0 ms



STARTUP, PARSING, COMPILING, LOADING, & SHUTDOWN

109 ms



TOTAL EXECUTION TIME

red = over 250 ms average execution time

Scope Variables Application Variables: applicationname=MyDomain cfversion=8 createcfc=Complex type licensedata=Struct (1)

CGI Variables: AUTH_PASSWORD= AUTH_TYPE= AUTH_USER= CERT_COOKIE= CERT_FLAGS=
CERT_ISSUER= CERT_KEYSIZE= CERT_SECRETKEYSIZE= CERT_SERIALNUMBER= CERT_SERVER_ISSUER=
CERT_SERVER_SUBJECT= CERT_SUBJECT=
CF_TEMPLATE_PATH=E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\connector.cfm
CONTENT_LENGTH= CONTENT_TYPE= CONTEXT_PATH= GATEWAY_INTERFACE=CGI/1.1 HTTPS=off HTTPS_KEYSIZE=
HTTPS_SECRETKEYSIZE= HTTPS_SERVER_ISSUER= HTTPS_SERVER_SUBJECT= HTTP_ACCEPT=*/* HTTP_ACCEPT_ENCODING=gzip,
deflate HTTP_ACCEPT_LANGUAGE=en-us HTTP_CONNECTION= HTTP_COOKIE=CFID=644870; CFTOKEN=67071573;
CFGLOBALS=urltoken%3DCFID%23%3D644870%26CFTOKEN%23%3D67071573%26jsessionid%23%3D32307ea0fbc5c6edc8447f133e18285f5b14%23lastvisit%3D%7Bts%20%272008%2D03%2D10%2017%3A23%3A25%27%7D%23timecreated%3D%7Bts%20%272008%2D02%2D27%2010%3A38%3A12%27%7D%23hitcount%3D984%23cftoken%3D67071573%23cfid%3D644870%23;
CUSTOMERID=10000;
CKFinder_Settings=TNN__;
JSESSIONID=32307ea0fbc5c6edc8447f133e18285f5b14; SID=0; AID=0;
CFAUTHORIZATION_MyDomain=Q2VudHJpY1dlYjo3RTIxODdLODVydkM6TWFyaWx5bk1pZ2xpbg==
HTTP_HOST=www1.MyDomain.com
HTTP_REFERER=http://www1.MyDomain.com/console/ckfinder/ckfinder.html?type=Images
HTTP_USER_AGENT=Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; WOW64; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506; Media Center PC 5.0; .NET CLR 1.1.4322) PATH_INFO=/console/ckfinder/core/connector/cfm/connector.cfm PATH_TRANSLATED=E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\connector.cfm QUERY_STRING=command=Init&type=Images REMOTE_ADDR=74.94.102.1 REMOTE_HOST=74.94.102.1 REMOTE_USER= REQUEST_METHOD=GET SCRIPT_NAME=/console/ckfinder/core/connector/cfm/connector.cfm SERVER_NAME=www1.MyDomain.com SERVER_PORT=80 SERVER_PORT_SECURE=0 SERVER_PROTOCOL=HTTP/1.1 SERVER_SOFTWARE=Microsoft-IIS/6.0 WEB_SERVER_API=

Cookie Variables: AID=0 CFAUTHORIZATION_MyDomain=Q2VudHJpY1dlYjo3RTIxODdLODVydkM6TWFyaWx5bk1pZ2xpbg==
CFGLOBALS=urltoken=CFID#=644870&CFTOKEN#=67071573&jsessionid#=32307ea0fbc5c6edc8447f133e18285f5b14#lastvisit={ts &apos;2008-03-10 17:23:25&apos;}#timecreated={ts &apos;2008-02-27 10:38:12&apos;}#hitcount=984#cftoken=67071573#cfid=644870#
CFID=644870
CFTOKEN=67071573
CKFinder_Settings=TNN__
CUSTOMERID=10000
JSESSIONID=32307ea0fbc5c6edc8447f133e18285f5b14 SID=0

Request Parameters: cfdumpinited=false checkauthentication=Complex type config=Struct (14) constants=Struct (32)

Session Variables: adminnavigation=Array (1)
cartdata= customerdata=Struct (33)
isauthenticated=1 orderdata=
promocartdata= sessionid=32307ea0fbc5c6edc8447f133e18285f5b14
urltoken=CFID=644870&CFTOKEN=67071573&jsessionid=32307ea0fbc5c6edc8447f133e18285f5b14

URL Parameters: COMMAND=Init TYPE=Images

Debug Rendering Time: 156 ms


I temporarily turn on ip debugging and then in the fiddler I got what is above.

The error occurred on http://www1.MyDomain.com/console/ckfind ... nector.cfm
User's Browser: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; WOW64; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506; Media Center PC 5.0; .NET CLR 1.1.4322)
Error Date/Time: {ts '2008-03-10 17:43:56'}
Previous Page: http://www1.MyDomain.com/console/ckfind ... ype=Images
IP Address: 74.94.102.1 URL Parameters: command=Thumbnail&type=Images&currentFolder=%2F&FileName=mobile%20001.jpg
Message: access denied (java.io.FilePermission \images\Images read)
Root Cause: java.security.AccessControlException: access denied (java.io.FilePermission \images\Images read)
Tag Context:
array
1 struct
COLUMN 0
ID CF_CFPAGE
LINE 205
RAW_TRACE at cfFolderHandler2ecfc1095938212$funcGETTHUMBSSERVERPATH.runFunction(E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\FolderHandler.cfc:205)
TEMPLATE E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\FolderHandler.cfc
TYPE CFML

2 struct
COLUMN 0
ID CF_TEMPLATEPROXY
LINE 39
RAW_TRACE at cfThumbnail2ecfc1111829995$funcSENDRESPONSE.runFunction(E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\CommandHandler\Thumbnail.cfc:39)
TEMPLATE E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\CommandHandler\Thumbnail.cfc
TYPE CFML

3 struct
COLUMN 0
ID CF_TEMPLATEPROXY
LINE 31
RAW_TRACE at cfConnector2ecfc1418390280$funcEXECUTECOMMAND.runFunction(E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\Connector.cfc:31)
TEMPLATE E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\Connector.cfc
TYPE CFML

4 struct
COLUMN 0
ID CF_TEMPLATEPROXY
LINE 28
RAW_TRACE at cfconnector2ecfm1581900619.runPage(E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\connector.cfm:28)
TEMPLATE E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\connector.cfm
TYPE CFML
--------------------------------------
access denied (java.io.FilePermission \images\Images read) null
The error occurred on line 205.

I have set up a sample Sanbox and was able to get similar error.
It happened to me when tried to create thumbnail and the thumbnails directory did not exist.
Could you try this file: http://ckfinder.com/hotfix/97/FileSystem.cfc and let me know whether it works for you?
Replace the old file from ckfinder\core\connector\cfm\Utils directory

Ok I tried it and it still isnt' working.

I sent you a private message.

I even renit the application.

Is there soemthing else I should try?

did you want me to uncomment the error code from the previous post?

still get this in the error email
0
CF_CFPAGE
205
at cfFolderHandler2ecfc1095938212$funcGETTHUMBSSERVERPATH.runFunction(E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\FolderHandler.cfc:205)
E:\Websites\MyDomain.com\www\console\ckfinder\core\connector\cfm\Core\FolderHandler.cfc

I replied to your private message but it still says sitting in my outbox. can you confirm if you got the pm? thanks.

This issue is solved.
I'm posting it just in case anyone was interested what was the solution.

In configuration file, thumbnails baseDir must point to the same place as baseUrl, in the same way like resource types are defined.

So the following is correct:

config.thumbnails = structNew();
config.thumbnails.url = config.baseUrl & '_thumbs';
config.thumbnails.baseDir = config.baseDir & '_thumbs';

Hi to all!
I have the same problem with the thumbnails showing only with question marks. I use the php version of CKFinder.
I copied the "ckfinder" directory in the root of my web server. In the configuration file I changed only the CheckAuthentication() function.

I see all the files and when I right-click the images are shown correctly, but the thumbnails are not created in the "_thumbs" folder. The permission of the /userfiles/ folder and all subfolders is setted to "777".

When I launch the command "http://mysite.com/ckfinder/core/connector/php/connector.php?command=Thumbnail&type=Images&currentFolder=%2F&FileName=myfile.jpg" Live HTTP headers output the following:
....
HTTP/1.x 304 Not Modified
Date: Mon, 04 Aug 2008 15:05:20 GMT
Server: Apache
Connection: close
Vary: Accept-Encoding
....

Any idea on this problem?
Thanks in advance!

Is it possible that safe_mode is enabled on your server?
Open _thumbs folder, CKFinder created there another subfolders, one per resource type. Check permission and owner/group of those subfolders. It may be that CKFinder is unable to write to _thumbs/Images to save there thumbnail of myfile.jpg.

Permissions of subfolders of _thumbs folder are set to "777".
Safe_mode of php is set to "ON"

You might need to disable safe_mode. It doesn't improve your webserver security and another drawback is that it is impossible for a PHP script to operate on folders created by the same script.
CKFinder created automatically subfolders inside of _thumbs directory and because safe_mode is on, it is unable to save thumbnails inside of those directories (even 777 doesn't help, because probably the owner/group of a subfolder is invalid).

My hosting provider is refusing to disable safe_mode. Is there other solutions?

I'm affraid not at this moment. The only solution for a server with a safe_mode enabled is to use ftp_* commands to create folders which means that you would have to change the CKFinder core to achieve this functionality.

Ok
Thanks for help wiktor

try resetting the permissions for the _thumbs directory. I recently found that although I had set the permissions correctly prior to actually using the editor for some reason the 777 setting did not stick and I was getting the the ? for thumbnails as well. Once I set the permission again for the _thumbs directory to 777 the Thumbnails started working.