A Slippery System.IO.FileLoadException

After installing the framework 3.5 SP1 (kb 951847) (which also updates framework 2.0) an asp.net web app occasionally began throwing the following exception, as reported by their custom error page: An error occurred attempting to process your request. Loading this assembly would produce a different grant set from other instances. (Exception from HRESULT: 0x80131401) MyCustomDll.MyCustomDllat MyCustomDll.MyCustomDll. This…

0