Cannot log in to AX2012 through Citrix

Dear all, I have this question. At this moment we have AX 4.0 and AX2012 for test. The issue is when I try to log in AX 4.0 through CITRIX everything is fine. BUT when I try to log in AX2012 through CITRIX I get a pop up window says : 'A problem caused the program to stop working corectly. Please close the program. '

And that is .. No other erorr messages etc... BUT when I log in AX2012 directly in our server there is no issue...

Do any of you faced such an issue? Our group policies and user rights for AX2012 are same but mu user account cannot log in ...

Thanks,

Ivaylo