I've installed mpich2 on my windows 8.1 machine, saved my account login and password to register. Everything went successfully until I decided to run the cpi.exe example. When I try to launch it in 1-processor mode it asks passphrase and launches application after I've type in the passphrase. 

But when I try to launch the application in n-processor mode it asks passphrase n times at once. So it looks like on the attached screenshot. And nothing works from here. Even typing the passphrase n times.

Please help me resolve this problem.

Thank you.

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Sincerely, chestercore