Hi there ejpeg!
It sounds like your issue will need to be addressed by uninstalling and reinstalling the iMovie application in order to reload those templets. We have an article that can help you uninstall and reinstall that application properly, and it can be found right here:
Thanks for using the Apple Support Communities. Have a good one!
Thnx for your suggestion Braden!
Unfortunately this didn't do the trick.
The app isn't bought via the App Store so I couldn't temove it via LaunchPad. I used App Zapper to delete it and then used the iLife '11 DVD to install iMovie alone.
Then I upgraded to 9.0.9 but to no avail. It keeps showing the black bar.
Here's how the Theme looks on my iMac (in iMovie > Resources).
And in Quartz Composer Visualizer
No black bars…
When I look up this file in iMovie > Rescources on my MBP it looks like the above, but with the black squares as the pic in my first post.