http://bugs.winehq.org/show_bug.cgi?id=7641
------- Additional Comments From dank@kegel.com 2007-05-03 14:58 ------- The "bad class name" would be expected if the app fails to call InitCommonControlsEx with ICC_DATE_CLASSES.
Maybe native doesn't require that anymore, though. We should probably add a conformance test to see.