I am having the same problem. I work for an Intranet Department. Previously, someone had installed a WebWiz forum and it is currently working. I am trying to install a second forum on the same server with a different name. It works on my end but others have the same problem as above. I can not figure out what could be causing this. I have tried the solution given above but it still can not be resolved. The forum that is not working is a a 7.9 version download.
Those who are not able to register receive a page not found error.
I on my end, tried registering 5 different aliases but still do not get the error they are receiving. Let me know what else could be causing hte problem.
Thank you.