While preparing my phone app for release, I thought I\'d change the version numbers on all my assemblies.
I also had an issue with the WCF service client not auto-ge
Take a look at your .csproj file. In my case, everything was correct but in that file there was a reference to the old name of the project like TheOldNamespace.App So i just changed that to the new namespace name and now it works again ;)
TheOldNamespace.App