I've been able to install in a single .95 .text blog just fine. Its the multi-user site, configured with aspnet_isapi.dll wildcard mapping that I am stuck on.
I HAVE gotten this to work by turning off *.* mapping and creating user and user/admin directories with the empty default.aspx's and a web.config with the FtbWebResource.axd httpHandler. Without FTB source modification, I don't see how its possible to use FTB3 with aspnet_isapi.dll mapping on in .text.
I would love to be proved wrong! Someone please prove me wrong!!