S. Danev

Please check the attached exception message:

after updating HelixToolkit.WinUI to the new version 2.26.0 there is a new exception Exception: Specified cast is not valid. at WinRT.ExceptionHelpers.g__Throw|38_0(Int32 hr) at WinRT.ExceptionHelpers.ThrowExceptionForHR(Int32 hr) at ABI.System.Collections.Generic.IVectorMethods`1.Clear(IObjectReference obj) at ABI.System.Collections.Generic.IListMethods`1.Clear(IObjectReference...