Some of you may have followed the other thread I have started about that. Here is more information.

The entire story is that only one site on the IIS server is able to display ASP pages. All other sites can't.

I don't know if this is a coincidence, but that site which is able to display ASP pages is using WWC. Since I have installed WWC, all other sites can't. Again, it might be a coincidence.

I even tried to reinstall the other sites several times. It didn't change anything.

The server returns error 500 which is a server error.