RTC Crashes when creating a new user.

Hi everyone,

when I try to create a new user, the RTC crashes as soon as the new user card appears.

[Window Title]
Microsoft.Dynamics.Nav.Client

[Main Instruction]
Microsoft.Dynamics.Nav.Client has stopped working

[Content]
A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available.

[Close program].

I used the Debugger and the code stopped at

OnNewRecord(BelowxRec : Boolean) of page 9801 users subform
IF User.GET("User Security ID") THEN;
PermissionEditable := ISNULLGUID("App ID");
CALCFIELDS("App Name","Role Name");

And showed an error in the debugger that "The Primary key definition of the table is changed, Start your activity again".

If the problem is the Primary Key, how do I know what was the previous primary key was ?


Thank you,
Mathan