Created Unassigned: MissingManifestResourceException in GetUserFromScreenName() on release mode [2572]

Hi,

When i compile on debug mode, i have no issue.
But on Release mode, this line crash my app:
```
IUser u = await UserAsync.GetUserFromScreenName(user);
```

The Exception is :
```
Une exception de première chance de type 'System.Resources.MissingManifestResourceException' s'est produite dans Microsoft.Threading.Tasks.ni.DLL


{System.Resources.MissingManifestResourceException: Exception of type 'System.Resources.MissingManifestResourceException' was thrown.
at Microsoft.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at Microsoft.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccess(Task task)
at Microsoft.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Tweetinvi.UserAsync.<GetUserFromScreenName>d__14.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Geek_Inc.Twitter.TweetExtented.<ObtenirMaj_User>d__b.MoveNext()}

```

Can you help me ? What's going wrong ?