hi Jari,
thanks for the example.
Here's what I did;
>> a) check the browser console to see if there are any messages
I opened the browser console (F11) and checked to see if there were any console error messages. There were not.
>> b) as a test- switch the form from popup mode to page mode and see if there are any messages.
I switched the browse so it calls the form in Page mode instead of popup mode. I then opened the browser console, and checked for messages while it went to the form.
I saw the following error in the console;
>> MailboxesFormControl:245 Uncaught ReferenceError: tinyMCE is not defined at MailboxesFormControl:245:1
This means the form is using the tinyMCE control (which it is) but in the Web server procedure support for TinyMCE is not turned on.
I turned on support for TinyMCE and tested again, and then it worked fine. I switched it back to being a popup form, and it worked fine.
I recommend you follow the same process in your app to see if there's a console message telling you what is wrong.
Cheers
Bruce