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Hi, it might be a good idea to allow searching for three-letter words in the forum. It would be easier to find existing forum answers if DVD, ISO, MP4 and other acronyms were allowed. Please refer to https://www.phpbb.com/community/viewtopic.php?t=1494295 for a possible solution.

Dumps have been submitted for the following discs found in the Matrix box set: ... Have you tried downloading the latest KEYDB.cfg file, copying it into MakeMKV's data directory (i.e. where MakeMKV also writes its TGZ dump files) and restarting MakeMKV? That solution solved my issue, thanks a lot!