If you downloaded DisplayFusion 12.0 and are having issues with languages please re-download and re-install. We have repacked the release as 12.0c with the languages fixed.
I'm running Beta 6 on Windows 8 and I can't scroll with my mouse wheel in the address bar in Firefox 21. If I close DisplayFusion it scrolls just fine. It seems to be just with the address bar. Page scrolling works fine.
I've tested and confirmed this issue here as well, thanks for letting us know! I'll be sure to post an update as soon as we're able to get this fixed up.
