I am also having a problem with the .Net scripthook. I just bought GTA4 the other day. It is a completely fresh install and I installed the latest version of LCPDFR and the quickfix. However, when I run the diagnostic tool, it says that .Net scripthook is out of date. Is this a problem you guys are working on? Or is there a place I can download the latest version? Thanks a lot.
Oh, and I attached my diagnostic results to this post.