I have found what I think is a caching issue with Firefox (3.0.5) and FCKEditor toolbar sets. It may be ASP.NET related.
Initially I was having problems creating my own toolbarsets, but I was finally able to get them to work. I tried to create an addtional toolbar and would get a message from the browser (FF) that the toolbar set didn't exist (this tool bar set was copied from an existing custom set). Changing the call to an existing toolbar worked just fine. Swapping names on "Basic" and "myNewOne" removed the error, but only produced the "Basic" toolbar, although the fckconfig.js had "Basic" defined with considerable more than toolbars. Hmm, caching? This is all in FireFox.
When I fired up IE everything came up correctly. Calling FCKeditor with "myNewOne" in IE worked just fine, but would still produce a messagebox in FF that the toolbar didn't exist. Looking more and more like a caching issue with FF. However, restarting FF and/or rebooting Vista does not clear this. So, if you are having problems with custom tollbarsets and are using ASP.NET & Firefox, try IE to see if the problem exists there.
Does anyone know how to clear FF from caching the toolbarsets? Or, have any other suggestions on this? 
I now think the initial problem with not being able to use custom toolbars was related to this apparent caching issue.
Sun, 01/18/2009 - 06:47
#1
Re: ToolBarsets - ASP.NET 2.0 & Firefox caching
This does appear to be a caching issue. Closing FF persists the cache. However, kicking FF in the head and pulling the rug out from under it does clear the cache and get it to use the latest toolbarset configuration.
The easiest way I've found to do this is to use TaskManager and kill the FF process; problem resolved.There may be a better way, but this worked for me.
Re: ToolBarsets - ASP.NET 2.0 & Firefox caching
Can't say i've ever tried "kicking FF in the head and pulling the rug out from under it "...
The easiest way is to clear your cache in FF - Tools > Clear Private Data > (Cache Checkbox). Or use something like the Web developer extension for FF, which has loads of cache options.