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Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Mon Mar 31, 2025 2:39 am
by nicholfd
lostinlodos wrote: Mon Mar 31, 2025 2:33 am
As a developer myself; I have two thoughts.
First, this looks intentional beyond the obvious, I believe they are trying to get ahead of a firmware attack that is reported but not generally not yet covered and as far as I can tell not in the wild yet.
Second: this change has broken most but not all ‘rippers’. Without being completely obvious the one from CN and the one from MY both still work. (Neither hold a candle to the ability of mMKV).
So does Daemon Tools.
I sincerely doubt this is intentional to this type of software.
Every piece of software of this type, for macOS, definitely uses some open source libraries for cross platform support. Apple uses (and documents) a lot of open source libraries within macOS. I suspect that a common piece of open source software/library is being used by the apps of this type that are now broken, and that Apple has deprecated it or moved on to a different version that theses apps weren't prepared for..
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Mon Mar 31, 2025 6:35 pm
by Konten
LemonMeringueTy wrote: Sun Mar 16, 2025 7:35 pm
lovemyflicks wrote: Sun Mar 16, 2025 4:38 pm
FYI: As a temporary get around, I'm running a Windows 11 Virtual machine using Parallels. Makemkv for Windows works fine in that environment. Just a few extra steps. Definitely prefer to run it native on the mac.
I've tried this as well, but I keep getting the occasional SCSI error, and 4K's will not read whatsoever.
Everything was fine in the MacOS version.
Has anyone been able to make it work for 4K's using Parallels?
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Mon Mar 31, 2025 8:02 pm
by ehemmete
Same problem continues with the official 15.4 release.
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Mon Mar 31, 2025 8:21 pm
by redrighthand
Hi all
Having this issue too. Ripped a DVD before installing 15.4 (released today) and it worked fine. Tried to rip another one after I updated my Mac and I am getting this issue. Panicked thinking I had broken my computer!
Luckily I have an old laptop kicking about that I can use to rip in the meantime but it's not ideal.
Hoping the devs can look into it soon.
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Mon Mar 31, 2025 8:49 pm
by randysolares
Same issue here just upgraded to official 15.4 and now Make MKV has fatal error, working perfectly today before upgrade.
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Mon Mar 31, 2025 10:02 pm
by asr101
The Dev really should have issued a fast update with a warning banner notifying the user of this problem. I suspect that this forum is going to get rather busy over the next few days.
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Mon Mar 31, 2025 11:25 pm
by CoffeeDrinker
I am also having this issue since the update from today. I actually need to use this software soon. I hope you can fix this ASAP
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Tue Apr 01, 2025 12:27 am
by ds1972
It would be appreciated if the developer, who people have paid money to for this software, could at least issue a statement.
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Tue Apr 01, 2025 7:21 am
by DavoBR
Has anyone who has updated to 15.4, I'm still on 15.3.2, tried running MakeMKV in Parallels?
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Tue Apr 01, 2025 8:29 am
by mike admin
The updated version for 15.4 will be available in a couple days.
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Tue Apr 01, 2025 8:31 am
by DavoBR
mike admin wrote: Tue Apr 01, 2025 8:29 am
The updated version for 15.4 will be available in a couple days.
Thanks Mike

Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Tue Apr 01, 2025 8:42 am
by Konten
Thanks, Mike!! So good to see you back on the forum... We missed you!!

Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Tue Apr 01, 2025 12:09 pm
by jarodharris
Thanks Mike. Delighted to hear this!!!
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Tue Apr 01, 2025 1:26 pm
by madacj
That’s great news I’ve just encountered this problem myself but not on the beta macOS the finished version that was released last night sequoia 15.4
Re: “Fatal Error Occured” with MacOS 15.4 Developer Beta 1
Posted: Tue Apr 01, 2025 2:50 pm
by mm8718
Late to the party but seeing the same issue on official 15.4 update - thanks @mike !