I downloaded YAF 1.9.3 Final SRC and integrated it into my application without much problem. I opened the solution file, copied web config and compiled it. The application compiled without errors and I started adding pages to the same solution. The entire stuff works well on test and live environment. I was able to even launch the application on to hosting account at GoDaddy (GoDaddy Hosting Connection). The YAF install went absolutely fine and I created all those needed for my forum. The problem started raising, when I try to Register or Edit an User. Since for the past one week I had been googling aroung this forum as well trying to get help from Go-Daddy, but no hopes yet. I am unable to configure YAF for medium trust environment. Whatever I do results in error on those pages and am unable to proceed. There are topics in this forum, that talks about medium trust issues, but none of them relates to 1.9.3 or 1.9.4. If anybody had cleared this issue, I would kindly request them to assist me in this regard. As am not a core ASP.NET guy, I am cornered with this error.