Hi there.
This was previously answered, let see if I remember it...
1º) You need to update the software to the latest update. I think this issue was solved with the Hotfix #27 (v2.0.0162), but not complety sure, think it had some issues on some of the Operating Systems ...
2º) If 1º doesn't work, try to update/change the maximum SQL memory: check how much RAM memory your PC has, let say 4 GB. Use SQL Server Management Studio (download for free, for your SQL version), connect to the server you use in RMS, open the properties of the Server in the memory node, and put the value to be at least 33% of the RAM memory your PC has...
Hope this helps, keep us updated...
Kind Regards, A.