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Looks like I was able to get it running by switching the ports it was connected to from my dock to the Macbook Pro itself. Thanks.

Error 'OS error - (ipc/send) invalid destination port' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '0' Error 'OS error - (ipc/send) invalid destination port' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '0' Error 'OS error - (ipc/send) invalid destination port' occurred wh...

While trying to burn a dvd it appears to work and starts to download the file into the movie directory but then shortly afterwards stops and reports Copy complete. 0 titles saved, 1 failed. This has happened twice to different DVD's. I have done this successfully dozens of times previously so am won...