Hi, I hoping someone has an idea of how to solve this - I've checked a lot of places on the net and have not found anything that points to a solution. Whenever I select "Change Source Control" from the File menu from within VS 2005, I get the following error: "Unexpected error encountered. It is recommended that you restart the application as soon as possible. Error: System could not allocated the required space in a registry log File: vs33\lib\reg\ckey.cpp Line number: 409" I'm running XP Pro SP2 fully updated on a P4 3.2GHz 2GB memory with between 20GB and 200GB available space on 5 drives. Anyone have any ideas? Thanks Jim