My Finale files cannot be viewed through QuickLook any more. If I select one of them and invoke QuickLook (by any GUI method), it just shows the icon and some information, like it does for folders or other items that QuickLook doesn't know how to handle.
If I invoke QuickLook from the command line and tell it to use a Content-Type of "com.makemusic.mus", it works correctly. In addition, an "mdls" on one of the offending files shows a Content-Type of "com.makemusic.mus", which leads me to suspect that OS X is passing the wrong Content-Type to quicklookd. How can I find out for sure?