Catanya - Access Denied

I bought Catanya and I really like it. However, once in awhile I get an "Access Denied" error. It's a real pain since it's very difficult to click out of. The error message continues to pop-up and I have to kill Sonar using the Task Manager.
 
At times it works, other times not. Anyone having this issue?
 
Running Sonar X2a, 64 bit with Win 7.