http://bugs.winehq.org/show_bug.cgi?id=31655
--- Comment #4 from Ken Sharp kennybobs@o2.co.uk 2012-09-30 16:31:15 CDT --- Found a workaround:
This FAILS: 1. Install SlingPlayer. 2. Upgrade Wine. 3. Run SlingPlayer.
This SUCCEEDS: 1. Install SlingPlayer. 2. Upgrade Wine. 3. Run wineboot. 4. Run SlingPlayer.
A +wineboot trace simply reports that it has nothing to do, but something is different.