Edited Issue: While trying to use Tweetinvi in a Windows Phone App in C#, I am facing the following error : [1915]

The base class or interface 'System.Net.WebException' in assembly
'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
referenced by type 'TweetinCore.Exception.TwitterException' could not be resolved

Any hints on what could be wrong and how to fix it ? Any more details required ?
Comments: This should now be fixed by release 0.9.1.x