I'm trying to get MapServer up and running under IIS on my Windows 7 x64 machine.
I've installed the latest 7.0.1 release msi from GISInternals
Added mapserv.exe to the Allowed list in the ISAPI and CGI restrictions
Created a map file, and tested it locally and it generates the expected image
But when I browse to localhost, http://localhost/mapserver/mapserv.exe?map=test.map&mode=map, I get an error ...
msProcessProjection(): Projection library error. proj error "Permission denied" for "init=epsg:4326"