Visual Studio 2013.
I have a solution that builds under Release and Debug configurations (with all project configurations set appropriately to Release and Debug). I have added a custom configuration called "Staging" and set only the web app startup project to this configuration (all other dependencies are still set to Debug).
When I try to build the web app I get...
SGEN : error : Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
If I switch the web app project configuration back to Debug it works. I have removed the Staging config from the web app and recreated it based on the Debug config but still have the error.
I've been stuck on this for 3 hours so any help is much appreciated.
Just to clarify, the Staging configuration is exactly the same as the Debug configuration except the startup web app is using a Staging config. This config has been deleted and recreated based upon the Debug config.
I found an answer here...
http://hashtagfail.com/post/5255977780/sgen-loaderexceptions-error
Debugging SGEN didn't reveal anything, but I disabled xml serialization since it appears it's only useful for Release builds.