Strange dropout when exporting video from Motion and Final Cut

Hi

I have been doing some work on my MacBook with Final Cut and Motion and have been noticing small bits of dropout when exporting files. Especially if these files have filters or motion editing on them. The drop out resembles small black lines, in different places around the screen, they flash for a single frame, but are very very annoying. I have tried re-exporting the footage and changing the compression settings but nothing seems to be helping, I was wondering if anyone else has experiences this?

Here's a frame with an example of what the drop out looks like:


Really hope you can help.

Samo