Changes made to "Media Cache Management" in Preferences will not save on exit. Can someone help?

Me too on v25.1

I look forward to this being resolved especially as my settings will not change from "Automatically delete oldest cache files when cache exceeds: 926gb"!! This recently caused my mac to go into a crash/boot loop as there wasn't enough accessible storage for the mac to run properly, had to reinstall a fresh copy. Fortunately I had a very recent time machine backup.

Big delay in work.

Same problem!

v25.1

Same problem here (v25.0.0)

When you set a size limit with the mediacache setting it's changes to a high value after restart.

It does not hold the given size value.

steps,

goto prefs and set mediacache size to 50GB

result

restart Premiere and look to this setting again, it has changes to a very high value

Version Cc2025.0.0 

Thank you for reporting this to us, Ciaran. I was able to try this in a recent beta build and it looks like it has already been fixed. Can you try it in a beta build (like. Pr25.1xBeta034 or higher) as well and let us know if it still happens for you or not? You can use the Beta tab in the CC Desktop app to install the latest public Beta build. Beta builds can co-exist with production builds, so you don't need to uninstall anything or worry about version conflicts.

Hi thank you for your report, we are investigating.