MMD Quicklook not working in macOS Sequoia 15.5

Recently, I noticed that Fletcher Penny’s MMD QuickLook was no longer rendering the Markdown preview on macOS Sierra. (The preview just looks like plaintext.) I reinstalled it, but this didn’t fix the problem. I also tried installing Brett’s customized fork of the project, but this didn’t fix the problem either.

I’m wondering if underlying QuickLook technology was modified by Apple. Since the MMD QuickLook projects have not been updated since 2015, there’s a good chance that something changed.

Has anybody else noticed the MMD QuickLook failing?

Best,
–Alexander.

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I’m wondering if there needs to be security permissions set somewhere?

Interesting thought. It’s not an app that appears in Settings’ security/privacy panel. Gatekeeper does not flag it.

I noticed that if I type qlmanage -m plugins in the terminal, the MMD QuickLook generator is not listed as being registered.

Refreshing via qlmanage -r and qlmanage -r cache and then rebooting does not fix the problem.

I have also tried storing the plugin in system-wide /Library/QuickLook/ vs. user-only ~/Library/QuickLook/, and it does not fix the problem.