I downloaded a few MUI classes that are PPC native, maybe even mos native from the custom classes page. They end in .mcc.elf ect. Do these go in the sys/classes/mui folder with the rest? I put them in there to test so I can use YAM. The toolbar.mcc.elf was required and seems to work fine where I put it. I just wanted to make sure I did it correctly.

You are in charge of your system
So if it works what can be wrong ?
I've renamed them and removed the .elf
for a unified look of the classes.

But in general all 3rd-party classes
schould be stored to sys:classes/mui

sys:classes/mui/ is correct.

Since later versions, the .elf is optional. I think the loader always checks for .elf first. I have been keeping this on for the 3rd party stuff I add, just so I know which is PPC and which isn't from a quick glance at the filenames!

Steve