Error #2038 when uploading

I've got the exact same problem. I've increased upload_max_filesize and post_max_size. My files are actually uploading, but I get this error at the end of the upload:

Processing...HTTP Error: status code 500. I/O Error: Error #2038.

Also. No thumbnail is created and the file does not show up in the display of the folder contents until I re-launch "Browse Server."

Hi,
can you send me some screenshot with this bug ?
Please check in Firebug console (Firefox add-on ) if there are any errors. Please also check in Firebug Net tab if all request are correct.
This problem occurs with all images/files or only with some kind of it ?

I'm having the same problem here. I don't have access to the server's error logs but I've attached a screenshot of the error and corresponding Firebug info. FWIW, no errors seem to be reported anywhere (including the XHR tab) but CKFinder. I don't get this error on my dev server, only the production server, and it happens in Safari and Firefox.

2038 - looks like a flash error and not CKFinder error. Could you try to remove flash upload plugin - http://docs.cksource.com/ckfinder_2.x_a ... ovePlugins - and see if you still get this error? If not than maybe one of those links will help depending on what you have in your application:

http://www.judahfrangipane.com/blog/200 ... -io-error/
http://www.uploadify.com/forums/discuss ... or-2038/p1
http://board.flashkit.com/board/showthread.php?t=742315
http://www.macewan.org/2008/08/21/error ... -io-error/

I had the same problem on Windows XP and Firefox 6.02. Deactivating the flashplugin helps, but that is a real petty because the multifile upload possibility would be great!

@biblop - what about one of links I have provided above? Have you tried any of those solutions?

I have only asked to switch of flash plugin to check if this is the source of the problem. Now that you have confirmed it would be nice to find a solution.
The problem is that none of our colleagues has this bug so we are unable to reproduce it and give you any advice. We can only suspect that this has something to do with your server/application configuration.

I've got two Server configuration:
1. w2k3 with asp.net 4.0
2. w2k8 with asp.net 3.5

It is not working on both of this servers. Strange enough with IE8 it is no problem, with Firefox 7.01 and Safari 5.0.5 its not working.

The exact error description i get is:
Processing...HTTP Error: status code 302. I/O Error: Error #2038.

Which means something like "temporary redirect". Maybe there is a file missing?

I'm on the way to find the error. When I install the ckfinder in the root everything works perfect. When I use a Protected (by web.config) folder the trouble starts. I'll get there and let you know.

The Problem is following constallation:

1. adminaspx/ckfinder/config.aspx
public override bool CheckAuthentication()
{ return (Request.IsAuthenticated);
}

2. Web.config
<location path="adminASPX">
<system.web>
<authorization>
<allow roles="Administrators"/>
<deny users="*"/>
</authorization>
<customErrors mode="Off"/>
</system.web>
</location>

«Request.IsAuthenticated» does'nt give back true in case of uploading wit Firefox, otherwise it is giving back true.
Wrong settings on the server or mistake in the CKfinder code? Keep looking...

Niklaus wrote:«Request.IsAuthenticated» does'nt give back true in case of uploading wit Firefox, otherwise it is giving back true.
Wrong settings on the server or mistake in the CKfinder code? Keep looking...

Maybe your session cookie is lost ? Can you check this ? There was always problem with Flash and Cookies...

I will check this as soon as possible, at the moment I'm on the way on holidays so it will take two ot three weeks. I will let you know.

I am receiving the same error
On my server everything was working fine
Some time ago file upload ended to work
I was using version 2.0.2 of ckfinder, I upgraded yesterday to the last version, same problem
safe_mode is on on this server (I don't know if it was like this before, when everything worked)
I am using ckfinder as Drupal module
I can send the result of phpinfo() if you need

I tested on Firefox 5.0 (Linux), Opera (Linux) and Internet Explorer 8 (Windows XP) with and without flash uploader.

Thanks

@florinn this problem looks like related with Flash upload which was added in CKFinder 2.1 (latest version). This is a reason why your CKFinder has this issue after upgrade to new version. It can be related with server configuration. To this moment I can't reproduce, but I am still searching .

EDIT:
@florinn Please send me your phpinfo() results.

In my case, using suhosin and secure http only cookies I had to go by useragent and write access per useragent.
The useragent "Shockwave Flash" gets its very own set of filters. Where as the non-flash useragent gets full session filters.
Flash in my case, was incapable of recognizing my session data causing #2038 errors. May be different in your case...

I had the problem before I upgraded ckfinder, I think it was because a change in the server configuration
However it it solved now, the hosting company helped me:

The php function flock() was desactivated
They activated it and now the upload is working (with flash uploader)

It is also happening to me as well, getting same error. it is happening randomly so it is hard to re-produce all the time.

Note: I am using java version of ckFinder 2.1.

-Amit

Hi @amitpatel ,
this error is related with flash uploader and server configuration. It can be related with some settings of server. Please read and try what others do. To this moment I can't reproduce this issue.

In .NET land I fixed this 302 error by adding this into the root of my ckfinder folder:

[file name web.config]
<?xml version="1.0"?>
<configuration>
<appSettings/>
<connectionStrings/>
<system.web>
<authorization>
<allow users="*" />
</authorization>
</system.web>
</configuration>

And the flash uploader worked absolutely fine. Basically you are getting a 302 redirect because the user is logged in, but the flash has it's own "context" as it is calling URLs outside of the logged in user. How to programmatically get round that so there isn't a gaping hole? Not sure. Am tempted to remove the .NET built in usermanagement stuff as it is bloated and convoluted for my needs.

Oh I also added HttpContext.Current.Request.UserAgent == "Shockwave Flash" to the CheckAuthentication().

@colinwiseman

The web.config as a start is agood idea, was trying something similair in the web.config in the root of the application. But your workaround is nicer.

What I didn't get is where dit you exactly ad the
«HttpContext.Current.Request.UserAgent == "Shockwave Flash" to the CheckAuthentication()»?

@mkesicki
With .net i don't think it is a problem of cookies because i don't check them my function looks like this:
public override bool CheckAuthentication()
{
return (Request.IsAuthenticated);
}

But maybe that works with sessions in the background as well...

I still have the problem on both Chrome and Firefox, and I've disabled Flash plug-ins in the only file (config.js) that it works in - which doesn't seem to actually make any difference (see enclosed screenshot in FF)

IE only works because it disables the Flash plug ins, which as someone points out, means that you can't upload multiple files. But it didn't disable anyway in either Chrome or Firefox.
All browsers on autoupdate so they should be current versions

Hope you can help and make this work!

PHP 5, Drupal 7, CKeditor whatever is the current version, CKfinder also the current version

Following on from Colin's cool fix, to check that the user is the correct authenticated user, we added:

if (Request.UserAgent == "Shockwave Flash")
{
FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(string.Concat(Request.Form.GetValues("ckfcookie_.AuthCookie")));
return !authTicket.Expired;
}
else
{
return Request.IsAuthenticated;
}

to the CheckAuthentication() method in config.ascx. If the form can decrypt the AuthCookie it must be the authenticated request and not an imposter. Anyone see any problems with this?

PS.
On further testing it seems you sometimes have to get the AuthCode from here instead:

Request.Params.GetValues(".AuthCookie");

How about php,
How can I fix it?
Pleaseeeeeeeeeeee

For Mac user you also have to add:
Request.UserAgent == ("Adobe Flash Player 10")

Hi all,

I also came across this bug on v2.1 for PHP.
It occurs also if you use a self signed certificate for your https session. Flash doesn't like self signed or invalid certificates.
Just add this to your config.js to disable flash upload, and everything should be fine:

// Disable flash uploads.
config.removePlugins = 'flashupload';

I had exactly the same problem and have fixed it. In my case it turned out to be a file permissions problem. It was uploading an image twice but not removing the 'temporary' version of the file - hence two copies of the uploaded image followed by an error message.

I used my website hosting control panel to change the file permissions to allow deletion and then it was OK.

if you want to see if you have the same problem try the following steps.....

In the CKEditor window click on the 'Image' icon then select 'Browse Server'. Click on one of the images using the right-mouse button and select delete. If it bring up an error message saying there's a file permission problem then there's your answer!

n.b. I am using the ASP versions of CKEditor & CKFinder and have not disabled Flash.

So, is this a known issue with the Flash uploader? In particular that it doesn't seem to work in Safari or Chrome? I am on linux Debian with an Apache httpd server. I can workaround this by using the "config.removePlugins = 'flashupload';" workaround, but I don't know if there is something else I should be trying to do?

Hey folks! Think I solved this without realising. I posted a bit back for .NET users to add in a web.config in to the CKFinder folder so that the Flash uploader would be allowed through FormsAuthentication. Turns out to be a slightly different issue and a nicer solution.

Basically as it is a Flash upload it creates it's own environment of cookies, and all browsers except IE (annoyingly) don't inform the Flash of security cookies, so Flash would get blocked going through any authentication walls etc etc.

So the solution is this:

http://docs.cksource.com/CKFinder_2.x/D ... leshooting

(and sorry it's for .NET users, but this might help others understand and find a solution). It basically says to add a HTTP module declaration in your web.config that passes the cookie information to the Flash uploader i.e. if you have been verified, then the Flash uploader will also be verified.

The 302 error you get before this is a security thing - as it's been redirect to a form to be logged in. So with this, no redirect and everything is hunky dory!

Hopefully this works for everyone

One of .NET users claimed that this has worked for him:

In file config.asp set the timeout to 3000 (seconds).

Perhaps it will help someone else to.