Throwing unexpected error - permissions page

Hi All,

we have few custom permission groups.

with Site collection administrator access i am able to open any of the security group. But if i try to open the security group with some other access level, let us say Full Control access level, it is throwing "An unexpected error has occurred" with the correlation id, i found below information in log file.

09/06/2013 05:06:59.52 w3wp.exe (0x3740)                      0x45E8 SharePoint Foundation         General                      8xfrVerbosePermissionMask check failed. asking for 0x00000005, have 0x2000011001b3682bd7-2333-4b31-a3b5-ec498b0647ef
09/06/2013 05:06:59.52 w3wp.exe (0x3740)                      0x45E8 SharePoint Foundation         General                      8xfrVerbosePermissionMask check failed. asking for 0x00000015, have 0x2000011001b3682bd7-2333-4b31-a3b5-ec498b0647ef
09/06/2013 05:06:59.52 w3wp.exe (0x3740)                      0x45E8 SharePoint Foundation         General                      8xfrVerbosePermissionMask check failed. asking for 0x00000041, have 0x2000011001b3682bd7-2333-4b31-a3b5-ec498b0647ef

Any idea how to resolve or what is the cause for this issue?

Best Regards, Karim