Esri.ArcGIS.Client.LayerCollection exception

Discussion created by jdewitt@marshallgis.com on Jan 18, 2013
Latest reply on Jan 21, 2013 by dbroux-esristaff
Installed and authorized the new WPF runtime 10.1.1 and generated the correct ArcGISRuntime.SetLicense() string. However, when I run a simple example with a Online Tiled Basemap Layer, I get the following exception:

[INDENT]'Add value to collection of type 'ESRI.ArcGIS.Client.LayerCollection' threw an exception.'[/INDENT]

Any ideas?