APEX

Hi,

In my application, I am using apex_application.g_print_success_message to print success message in the processes section when the page is submitted. However this just doesn't seem to be working.
Surprisingly, same thing is working on development and testing box, however, on production, it is not working.. Initially i thought that "include process success message" checkbox could be left unchecked, but no; the checkbox is very well checked, still this issue..

Tried commenting the statement apex_application.g_print_success_message in the pl/sql block and rather putting the message directly in "Process Success Message" under "Message" section; however even this is not helping out.

Is there anything else which overrides the "include process success message" setting in APEX? Any workaround to make it work?