After digging into the recent device log:I found that only this warning concerning widget occurs:
[2015.12.20-11.20.19:812][ 0]LogLinker:Warning: CreateImport: Failed to load Outer for resource ‘WidgetTree’: WidgetBlueprint /Script/UMGEditor.Default__WidgetBlueprint
But other widget warning doesn’t show.I think this error is not caused by my widget blueprint.Because even if I add an empty widget blueprint,this warning will show.[link text][1]
I don’t have a mac,so I don’t know whether there is a difference.Thanks!