Problem with RD gateway manager

Hi,

Have some problems with manager. It used to work, but suddenly I can't connect to local server.

Get this error:

"The RD Gateway Managment snap-in console cannot connect to the server. To connect to this server, you must be a memeber of the local administrators group on the server."

The user account that i'm using is a member of the local administrator group.

Any ideas?

The RDS server is a Win2012 server. The AD server is a win 2008 R2 server.

Thanks

\Kent