I try to install ArcGIS Server version 10. Everything worked fine with installing the GIS Services. The Server is running. I can create services and see them in ArcCatalog. But when I try to install the Web Applications I couldn't select the "Applications Manager".
I try to install it on Windows Server 2008 (64bit) with IIS7. I double checked the settings and required extensions for IIS and it seems to be correct. I even changed the IIS seting from 64bit to 32bit. But the "Application Manager" in the Select Feature Dialog is still not shown.