I made a ticket and Maxon recognized this was an issue some months ago.

I'm thankful to you, Dr Sassi for your response (and your help over the years, which has saved me through and through), so this isn't to you.

I write rather to express my frustration that Maxon hasn't resolved such a simple thing, a simple thing that happens to be very important. Maybe my workflow isn't ideal in that I rely on thumbnails of many c4d files I have on my computer... but it's just the way I've operated for many years, I rely on the thumbnails when I'm trying to find a past model. And now this task of finding some file here and there takes about 50 times as much and causes incredible distress and frustration.

I just have a bad taste in my mouth that I pay as much as I do for this software and still have to deal with such issues.

https://eclecticlight.co/2024/10/31/how-sequoia-has-changed-quicklook-and-its-thumbnails/

Maxon developers need to update some things given that Apple revised the way in which thumbnails are created.

Hey guys,

I'm on a m2 MBP (Sequoia 15), with the latest c4d (2025) .

Whereas files would show the thumbnails with a preview of the file model or whatever on earlier version of c4d, c4d 2025 now shows just the c4d icon.

I really would like to have the preview, (don't follow good naming/file organization schemes... it's practically impossible for me to work without this).

Any idea how I can get the file preview thumbnails back?