Somehow with recent NV 20110611 release - wrong libraries were tested and included: ones using old reference storage method - instead of new ones shared memory based. As nature of those - remember that after an update, old ones can be still in use (rarely, but happens) - simpliest way to unlock those, and let NV update those on start is system restart.

Additionally - possibly issue with x64 library not always found, even when in the same directory - was solved. As far as we get reports - it seems most likely issue. Other fix to this issue would be - in theory - copying dll to System32 directory, or any other which is searched during DLL calls.