I ran into a few issues getting a silverlight app running inside CommunityServer ( version is 2007.1 ). To keep things clean, I am publishing all required files for the silverlight app in it's own folder off the root of the site. I then want to embed that app in a single post. Simon Guest posted a great tutoral for Silverlight Videos, but I was still having issues loading the app. After using his iframe example, I got this error:
ag_e_runtime_managed_assembly_download
Searching on that led me to this post. The fix turned out to be easy. I updated the website to allow only scripts instead of 'scripts and executables' ( website properties > Home Directory tab, Execute Permissions setting ).
Now I have it working for this post: SpaceRocks "With Friggin Laser Beams"