Windows phone 8.1 无法使用Nutiteq SDK Windows Phone创建HTTPTileDataSource

我对Windows phone nutiteq sdk有一些问题

string onlineTiles = "http://tile.tgt72.ru/{zoom}/{x}/{y}.png";
var tileDataSource = new HTTPTileDataSource(1,10, onlineTiles);

此代码引发NullReferenceException

{System.NullReferenceException: Object reference not set to an instance of an   object.
at Nutiteq.DataSources.HTTPTileDataSource.SwigDerivedClassHasMethod(String methodName, Type[] methodTypes)
at Nutiteq.DataSources.HTTPTileDataSource.SwigDirectorConnect()
at Nutiteq.DataSources.HTTPTileDataSource..ctor(Int32 minZoom, Int32 maxZoom, String baseURL)
at CityTransportWP.MapPage.ApplySourceForMap()
at CityTransportWP.MapPage.InitMap()
at CityTransportWP.MapPage..ctor()
at CityTransportWP.CityTransportWP_XamlTypeInfo.XamlTypeInfoProvider.Activate_3_MapPage()
at CityTransportWP.CityTransportWP_XamlTypeInfo.XamlUserType.ActivateInstance()}

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感谢您的报告，这是SDK 3.1和3.2RC1中的一个bug。这在即将发布的3.2RC2中得到了修复。

3.2.0RC2现在发布了此修复程序，请参阅