I'm using iMac Pro. When I using Premiere Pro, sometimes it will show that error, I don't know what is it, anyone can help!
I'm having the same issue as well. Could use some help too.
I tried clearing media cache, resetting plugin and preferences with no luck.
If I restart Premiere it goes away for a short time.
I am also having this issue. I have a 2019 Mac pro 24 Core with the 5700x card and 28 gigs ram, running latets PP and latest Big Sur. Premiere is bringing my computer to its knee's. Everything locks up, or runs so slowly as to be unusable.
I have cleared cache, reset pref's multiple times. It works for a short while, and then it will lock up.
Its driving me nuts.
I was getting those messages and something about .mxf importer.
I just downgraded to 15.1 and there have been no 'S error or mxf messages so far.
Update - In addition to downgrading Premiere, I also had to downgrade Media Encoder as well. Version 15.2 Media Encoder had failed encodes when working with 15.1 Premiere. I am hoping this is only a temporary downgrade until the next software update.
I'm working on an iMac Pro running OS Mojave.
Finally, I also downgrade Premiere Pro and Media Encoder to 15.1 as well. It's seem back to normal and no error.
Thank you for your suggestion.
Lifesavers!! Did as you did, and for now at least, its working flawlessly.
I am experiencing this issue as well. do we know if Adobe plans to fix? Do we know the root cause of this?
This has never happened to me before until today and I havent done anything differently to my knowledge.