Quicktime Player not playing from USB drives

Throwing this at the Gurus out here,
Got an interesting issue going on with my USB drives. I have media that won't open with Quicktime on two 3TB USB drives, but if I move the media to Macintosh HD it runs. I checked permissions on the drives and am able to run the media (photos, audio or video) with Quicktime Player 7, but not with the normal Quicktime Player.
Any hints? Thanks.

Never mind. After I had uninstalled, reinstalled, updated everything...
it still needed one more reboot. Then it worked again.

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