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I was trying to rip a screener of "The Last Jedi", which failed.

In trying to submit a failed disc report, I went to copy the *.IFO files, but the VIDEO_TS folder was empty.

I couldn't see any files in either the Finder or the Terminal in OS X.

Is there a way to see these files to help aid with ...

That did it! Thanks for the info!

Well, it's definitely the latest version for os x (just downloaded it), definitely a DVD, and definitely doesn't have the tick box to activate manual mode.

I know I sound crazy, but I'm definitely not.

Any other thoughts would be helpful. Thanks!

No manual mode box on mine for some reason. (I also can't seem to upload a screen shot proving as much; it says:

Sorry, the board attachment quota has been reached

Any thoughts?

MakeMKV v1.10.2

Yes, it's a DVD.

Type: DVD
Protection: CSS / CPPM
Disc type: DVD-ROM
Data Capacity: 5.80 Gb
Maximum read rate: 10.08 Mbps [1x]
Number of layers: 2 (OTP)

I'm trying to use manual mode, but don't know how to access it.

I've read this: http://makemkv.com/manualdvd/ which explains how manual mode works, but not how to turn it on.
I've read this: http://www.makemkv.com/forum2/viewtopic.php?f=7&t=15005#p51240 which say

Launch MakeMKV, choose the right ...