Just redid my main machine and did a reinstall of Windows 7 64. Ran into an issue.
I followed the guide, and consistently got a crash when I tried to set my units as 'big'. This happened at the same step. Ensured I ran as admin, had UAC off, no AV running, and had the folder outside of Program Files. I have set this up several times, never an issue before until tonight.
I solved the issue by following the advice in this thread:
Folding Forum • View topic - Can't configure with passkey
ToTOW, a moderator, says that the client will sometimes crash when setting the unit size if you change the executable name (ie. from "Folding @ home-Win32-x86" to "fah6).
Worked like a charm after I left the name at the default.