http://bugs.winehq.org/show_bug.cgi?id=28329
--- Comment #5 from Matti Hämäläinen ccr@tnsp.org 2011-09-09 16:06:13 CDT --- (In reply to comment #4)
err:msi:iterate_load_featurecomponents unknown component L"HKLM.VSTPath"
This suggests that you're not running latest git, which has a fix.
Ahh .. seems Alexandre has pushed in some more changes while I was doing testing. Will check.