Fixed hang when canceling mcf create
Fixed no buttons showing on playlist toolbar
Added tracing for unhandled exceptions in main thread
Merge pull request #820 from lodle/exceptiondebug

Added tracing for unhandled exceptions in main thread
Merge pull request #819 from lodle/mcfcreatehang

Fixed hang when canceling mcf create
Merge pull request #821 from lodle/playlist

Fixed no buttons showing on playlist toolbar