Not able to add through Panel anymore - troubleshooting qcodo?

Step one in troubleshooting QCodo seems to be to switch to server actions instead of ajax ones, or to debug in firefox.
QCubed has a fix to ensure ajax errors are properly displayed in all browsers.

Sorry, meant to post a link to that.
The patch can be found at:
http://trac.qcu.be/projects/qcubed/ticket/432

You mean comment this out?

   // Start Output Buffering    
   function __ob_callback($strBuffer) {
       return QApplication::OutputPage($strBuffer);
   }
   ob_start('__ob_callback');

In order to debug the server side, you can look at your webserver log to see which error is PHP triggering. You can get a lot of information looking at your server logs (where the “movie action” is), more than expecting it in the client side (where you only get the resulting picture).

Additionally, if you look at your webserver log and positively see that no error is triggered (PHP simply fails silently), I suggest it may be a process memory exhaustion problem. Then I recommend to raise the PHP memory limit in PHP.INI and see if this solves the problem.

I'm really confused as to what error you are encountering...

At the top, you're saying that the application is “hanging” -- what is hanging?  The browser?  Does it crash?  Does PHP crash (e.g. you get a segfault)?  Do javascript events stop working altogether on the page?

Then I ask you to comment out the ob_start stuff, and then you post HTML of a form.

So what's the issue then?

I'm really confused as to (1) what you're trying to do on the page, (2) what your expected behavior is, and (3) what the actual behavior is.

I know that you're feeling frustrated with this issue that you're encountering -- but please understand that in order for others to help you with your issue, it would really help if you could be a lot more clear in your questions and in describing the issue at hand.

Unfortunately, simply posting a link to your entire codebase or an entire listing of a file makes it very difficult for anyone to help you debug the issue or problem...

Bottom line: Folks do want to help... and the easier you make it for others to help you, the better.