M1 Macbook Pro (Max) Lightroom Classic Won't Export Reduced Size Jpegs

[sam_moores]

This is a very odd one. When I try and export a PSD from lightroom as a thumbnail for youtube and set my usual settings of 1080pixels longest edge and a maximum file size of 2000kb it says the below message. I have used these settings on files for years. It seems to output a 22ish mb file regardless of settings (I tried reducing quality down to 1). This is also the same for saving via a copy in photoshop. 

I checked the same file on my iMac (Intel) and it created the desired file instantly. I tried re-installing etc but something clearly isn't working. 

[johnrellis]

Are you using an Export preset to do this? Try creating a new from-scratch preset with the same settings. Very infrequently LR corrupts presets.

[sam_moores]

Thanks, unfortunately it makes no difference. I've tried exporting in lightroom classic and lightroom, neither work. 

[sam_moores]

ok, after some more googling and testing it seems trying to export all metadata that was the problem. As soon as I limited that to copyright only it worked. 

[johnrellis · Accepted solution]

This bug was reported fixed in 11.1:

https://community.adobe.com/t5/lightroom-classic-discussions/m1-macbook-pro-max-lightroom-classic-wo...

Do Help > System Info to verify the version you're on, and if you're not on 11.1, do Help > Updates.