Opp's my Bad.!! Didn't see that you had already done that.!!!

Could it be a computer conflict.? I don't use win7 on my machines only XP. Try running has adminstrator.?
I know the PP driver doesn't work on 64bit but Mach does and the ESS so can't see it being an issue here.?

To me it seems computer related because like I say I know 2010 is stable on .R3.043.022 you could try belt and braces approach and try the absolute known stable Mach version that Gerry use's and designed the 2010 set on which is Rev R3.042.020.?

After this this then I don't know.!