Why no .wmv preview in finder?

my finder in list mode does not display preview boxes for .wmv clips. i have both flip4mac and perian installed, and latest qt player. the finder displays preview boxes for .avi, .mpg, .mov etc. but not for .wmv...since most clips are .wmv, this is inconvenient...
any suggestions?

Hello. I had a similar problem an solved it like this:
Search for following file:
iWork.qlgenerator
(use advanced search in the Finder with Option "Include Systemfiles")
Move this file (iWork.qlgenerator) to following path:
Sytem / Library / QuickLook
If there's no folder named QuickLook, just create one.
That does the trick for me. Good luck.

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