Missing checkboxes for user rights

Hi,

I miss some checkboxes for setting user rights in RDM Enterprise 10.6.7.0 - 11.1.0.0. My user is marked as administrator. It works on another machine, but not on my main workstation. System: Windows 7 Professional (both). Shared database (MSSQL).

It affects this dialoges:
Administration - Security Groups - Assign rights
Administration - Users - Edit User - Roles - Roles

In both dialoges I can not see the checkboxes for the rights (view, add, ...) or the checkbox for Is Member (see attached files).

In other dialoges I can see the permission checkboxes, f.e. in Administration - Users - Edit User - Permissions.

What I already tried:
- Reinstall Remote Desktop Manager
- Reinstalled RDM + all dependencies (Visual C++ Redistributable 2010+2013)
- Copy the %LOCALAPPDATA%/Devolutions/RemoteDesktopManager folder from the working workstation to mine

Unfortunately nothing helped. Do you have any ideas how I can solve this or do you need more informations?

Thanks, Andreas