try the earlier version of makerware desktop. It's a lot more reliable.
http://3dprintboard.com/showthread.p...-x86-computers

I did try 3dprinteros on my makerbot clone. Just didn't work.
That said I haven't tried the new version yet.
Mind you my internet connection can be a bit dodgy at the moment - so a cloud based slicer isn't me best option.

And no it's not the right section. The dedicated makerbot section would probably have been better :-)