Quote Originally Posted by Aussiebear View Post
Welcome to the VBAX Forum Abbaskip. There's nothing there that pops out as unworkable to me. Are you able to create an xlsx format and try to run that on a Mac. That will test is the standard file is an issue. If it accepts that then we need to look at the VBA side of things. I'm assuming that "Rectangle1" is a named range rather than a Shape?
The xlsx opens and works completely on Macs once the file is opened and "repaired" so it definitely seems to be the vba

Rectangle1 is a shape - is that an issue?

I originally had a form button (not ActiveX), but changed to a rectangle shape in case the button was causing issues.