Edit Stats Not Working!

[irba]

Hello,

We are not able to edit e pre-configured STAT, and also I'm not able to find what caused this problem.
I set myself rw permissions to all groups, so I don't think it is a permission issue.
Also I have to say that we upgraded to OTRS 3.3 last week, and Edit Stats was working fine after upgrade.
When I try to Edit some stats, it generates the following error:

Code: Select all

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, root@localhost and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log

.[/i]

Regards!

[reneeb]

Code: Select all

[...]
More information about this error may be available in the server error log

.[/i]

Regards!

What does the log say?

[irba]

These are the error logs that I've got. But I don't think that they are related to STATS:

Code: Select all

Mon Dec 16 10:06:26 2013	error	OTRS-CGI-11	Need UserID or CustomerUserID!
Mon Dec 16 10:04:22 2013	error	OTRS-otrs.Scheduler-11	GenericInterface task execution failed!
Mon Dec 16 10:04:22 2013	error	OTRS-otrs.Scheduler-11	DebugLog error: Summary: detail: , faultcode: soap:Server, faultstring: Server was unable to process request. ---> Value cannot be null.Parameter name: value Data : No data provided.

Now I'm able edit all Statistics. And I didn't change anything. It's all so strange.
Also for some minutes I couldn't see any Stats. When I went to Statistics -> Overview , it showed 0 of 0 statistics. Meanwhile I checked the xml_storage table and I saw that nothing had changed there. All the stats were stored.
If someone knows what caused it, please share with me, so I can avoid it for next time.

Thanx in advance!