Mar 16, 2012 12:09 AM|levib|LINK
To work around this issue for the Beta, do two things. First, add the following to your ~/Web.config if it is not already there:
<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
Second, add this as the first line within your Task-returning action method:
The second part (the 'await Task.Yield();') will not be necessary once this bug is fixed post-Beta.
Hope this helps!