That's not the problem any longer. By commenting out 'echo "uploadSuccess event detected";
', I've gotten the flash upload to successfully write the first files selected to the server - so now I know that I don't
have a MOD SECURITY issue or similar.
The problem now is that there is no confirmation that the first file upload is completed, so no subsequent file uploads can take place until the upload is 'submitted'. But that file is fully written to the Users folder on the server. But when you do hit 'submit', that first file upload works perfectly.. it gets moved from the 'Users' folder to the 'Files' folder and then correctly shows up in the gallery. It does this even if there are other files in the qeue that are stuck in 'pending' mode.
Here is a screen shot of what happens when the first file finishes uploading (and is fully written to the server), but does not go further: Screen shot 2010-02-06 at 8.05.36 PM.png
So I think that the issue is somewhere in the scripting - the system is just not getting confirmation that the file is fully written, so it just hangs. But again, that first file is fully written. What would be of huge help would be to identify the code that deals with confirming the write is complete, and then triggering the second process in the sequence.