Ok I had my Isapi filter installed fine on a seperate website. Then I am trying to test with plesk (not on production server) to immitate a problem I was having. I have managed to do so.
Basically the Isapi Filter is added on the list. Its not even getting loaded because its not even creating logs where as it was before. I have given full permissions to all I can on both the /system32/IIRF/ and /temp/IIRF/. This was working fine till Plesk
Heres a screenshot, the rest of the sites running on there are plesk. Don't worry about the domain, I am accessing it through the IP. The IP has only been assigned to that 1 site on port 80 whats normal.
I am running IIS 6 and Plesk 9.0.1.