OK button on active unit type grayed out

[fred]

I am just learning Fusion 360 and decided to try to change the active unit type from MM to inches. As you can see in the attachment, the OK button is grayed out. What am I missing? Thanks.

[TheCADWhisperer]

What happens if you change to any units other than inch?

Can you create a Screencast recording?

[innovatenate]

Does it say read only on the upper toolbar? Did you open a previous version? If so you may need to promote it to a new version or perform a Save As before being able to edit the Active Unit.

I hope that helps.

[fred · Accepted solution]

I noticed that I couldn't even change the units in a blank design so I shut down Fusion and rebooted my Mac (probably not necessary) and all is well? Thanks for your quick responses though. Just a

fluky thing I guess??