Converted DMG cannot be opened - DiskImageMounter: legacy image should be converted

[Michael_Tsai]

@MatthiasR

The DMG i wanted to convert with the new layout was signed and contained a notarized app. Is it possible that that caused it?

I don’t think so, as that’s normal for disk images these days. It’s possibly that there was some other fluke occurrence that caused DiskImageMounter to report the wrong error message.