


System.IO.FileLoadException: Loading this assembly would produce a different grant set from other instances. Why is Silverlight 4 RTĪnd Silverlight Developer RT not compatible, and is there a workaround to fix this problem? Here's my error:Įrror 1 The "CreateRiaClientFilesTask" task failed unexpectedly. I updated my Silverlight 4 to the developer runtime and now I'm not able to browse the silverlight website I developing as it requires me to upgrade my Silverlight 4.

I had Silverlight 4 runtime installed on my developer machine.
