We've forced a core upgrade to version 1.05 for GPU2/NVIDIA. We did this since there is important new code there. In particular, there's code that will better handle unstable or incorrectly configured machines. This core now generates an UNSTABLE_MACHINE error and the 6.12beta6 client will trap this error, leading to a 24 hour sleep for the client if 5 such UNSTABLE_MACHINE errors are reached.
If you are having problems running your client after this forced core upgrade, it most likely means that there's a problem with the client installation, most likely with startup aliases. If this is the case, please check out the FAQ and in particular note that the Start In and Target directories have to be different:
In Windows XP:
Target: "C:\Program Files\Folding@home\Folding@home-gpu\Folding@home.exe" -verbosity 9
(or whatever flags you use instead of -verbosity 9)
Start in: "C:\Documents and Settings\<your_windows_username>\Application Data\Folding@home-gpu\"
In Windows Vista:
Target: "C:\Program Files (x86)\Folding@home\Folding@home-gpu\Folding@home.exe" -verbosity 9
(or whatever flags you use instead of -verbosity 9)
Start in: "C:\Users\<your_windows_username>\AppData\Roaming\Folding@home-gpu\"
Please see our FAQ for more details:
https://foldingathome.org/English/FAQ-NVIDIA