GREE login problem on iOS


everytime i try to login via gree, xcode give me the following error message (the app still runs)

NullReferenceException: A null value was found where an object instance was required. at System.Guid.NewGuid () [0x00000] in :0 at GreeReceiver.AddCallbackSigning (System.Action1 onSigning) [0x00000] in GreeReceiver.cs:172 at Gree.Authorizer.Login (System.Action1 onLogin) [0x00011] in Gree.cs:1029 at GreeAuthScript.OnGUI () [0x00058] in GreeAuthScript.cs:29 (Filename: GreeReceiver.cs Line: 172)

I’ve tried this with the sample code provided from GREE, but it doesn’t work.
The initialisation is fine:

[GreePlatform.m:368] Initialized Gree Platform SDK 3.1.0 (Build DEVELOPER_BUILD120)

Is there something else I have to consider, when building?

The problem was that I used Stripping Level “micro mscorlib”. When I use ByteCode everything works fine. I think I can actually use the micro mscorlib, but I have to add some SDKs later on.