Looks like Forms crashed.
You can refer to :
Forms Crash With Error FRM-93652 After 11g Upgrade (Doc ID 1096125.1)
The patch number for Win32 is Patch 11741169.
The patch number for Win64 is Patch 11741170.
For UNIX platforms this fix is found in Patch 9965029.
If applying the patch is not possible, the following workarounds have been shown to succeed:
1. Set the menu property "Share Library with Form"= Yes
2. If call_form() is being used, use the parameter "SHARE_LIBRARY_DATA "
Hope this helps.