This is possibly because you enabled 32 bits per pixel on the factory details page, but this bit depth is not supported by the VNC server.
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Expire in 60 minutes for Priority Users
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Server IP address %(ip)s is disallowed.
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Your Screenshot Factories
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<em>Questions?</em> Please write to <a href="mailto:priority@browsershots.org">priority@browsershots.org</a> and we will be happy to assist you.
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If you really can't get Python to run on your computer, you could write your own screenshot factory in your favorite programming language, according to the <a href="/documentation#FactoryInterface">FactoryInterface</a> specification.