Sonar Platinum Hanging/Freezing Upon Closing Project

This used to happen very seldom, but now it's happening almost every time I try to exit sonar. After I'm finished with a session, I'll save as usual, then close out the session by choosing file -> close. Normally if I wait a few seconds, I can tell that Sonar's done "thinking" and then I can completely close out Sonar by either pressing the X in the top right, or by choosing file -> exit. However, now Sonar just freezes and my mouse cursor turns into that "loading circle" indefinitely. I have to Ctrl+Alt+Del in order to finally close down Sonar. I have no idea what caused this to happen all of a sudden. Has anyone else experienced this lately? 

lfm
Check this out:
http://forum.cakewalk.com/Platinum-x64-increasingly-unstable-when-closing-projects-m3210198.aspx
 
if any clues.

Thanks for the link. I love almost everything about SPlat, but I really don't like how unstable it's been for me lately. I'm also getting intermittent glitchy audio upon playback which never happened before.