Cannot delete User Groups or Process in Bonita BPM Portal 6.3.7


I've installed Bonita BPM Portal and engine in a Linux Server (Oracle Linux 6.5), running in Glassfish 4 (Not a Bundle, single installation). I'm using BPM Studio 6.3.3 and BPM Portal 6.3.3. I'm able to deploy anything (Process, Organization), but, when i try to delete any of these items i'm getting this message:


And i don't see anything in the log (no stacktrace describing the error).

This is my configuration:

code issue - deleteProcessInstances not deleting processes...

Hi there, a code issue:

Bonita Studio 6.3.7, Java, Windows 8.1

I'm trying to delete some processes as details ... click here ...

but it's not working...telling me the system will not process the request as follows: