Hi Rollo,
I've been having the same problem lately - mostly the new work is saved but not always - and it may (or may not) have something to do with my Kaspersky internet security having deleted a file from RB - $rbmidimon.exe. It said there was an object in the file called "HEUR:Trojan-Dropper.Win32.Generic".

I don't understand this at all and have no idea what to do about it - I tried reinstalling RB but it didn't help.

Have you resolved your problem? (I hope so since it was nearly a year ago).

Clinton.