Is the ArcGIS Server 10.0 web ADF application builder installed on the same website on this machine? It sounds like there may be a conflict between the ADF/Server Manager application builder and the web adaptor.
Hmm, I guess it is installed on the same machine. How could I check this? I had ArcGIS 10.0 previous installation on this machine. Is it possible that I have left anything uninstalled?
Thanks.