Was your UBB.classic version the very latest version, 6.7.3, or was it something earlier? Just worked with someone who had forgot to upgrade first, and were trying to import from 6.1.
If you're sure you're running 6.7.3, then more than likely it's something that's already been stated in this thread. On your last post you said you moved the Members to the /Members area. Not sure if that's the right spot. You want to move it to the same directory that your other ubb.classic files are it, so it should be somewhere in your cgi-bin, and then you'd need to set that path properly on the importer form.
