I have the same problem. I cannot install logmein on a windows 7 pc. It always says "Password too short or does not meet requirements", then says the setup wizard edded prematurely.
I have no idea which password its talking about. The PC is on a domain, but there are no password restrictuions, I am logged in as teh domain administrator, the domain administrators password is extremely compliex.
i have tried ever greater complexity of passwords, but there seems to be no solution - it seems like a bug in the logmein installer. I see there are other people with the same problem, and no solution.