Texture import settings: Apply doesn't work

I am having trouble with the import settings on some textures – I make a change, click Apply, and Unity seems to be doing the reimport, but the changes don’t actually take effect. I need to enable Read/Write Enable for an NGUI atlas (which was working fine until today), but the same problem occurs when I change the Max Size – I change that to 512 and Apply, but afterwards the size is still 2048. Any suggestions?

thanks
Dave

Sounds like Editor script mischief - delete everything in Assets/Scripts/Editor and try again.

Check console window for errors.

Do you (or any plugins) have any asset processing that might interfere with this?

Are you sure you’re editing settings for the right platform? If your editor thinks you’re building for PC, and you’re editing the Android import settings… results may not be intuitive.