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The page http://mame32fx.altervista.org/forum/viewtopic.php?f=4&t=172&view=previous&sid=5b1fe79d3ad06f8347b171981d2f9e54 was not found on this server.

This can be due to:

Pay attetion to UPPER and LOWER cases
http://site.altervista.org/Page.html is different from http://site.altervista.org/page.html