Gerriet M. Denkmann
macOS 12.5, Xcode Version 8.3.2 (8E2002), a Cocoa Swift project.
Worked fine; then I changed the name of the Target from “OldName” to "NewName".
Now nothing works. I get told:
Unknown class ‘_TtC4<OldName>10<SomeClass>’, using ‘NSObject’ instead. Encountered in Interface Builder file at path…
I tried cleaning the build folder - but still.
So I had to change the Target back to OldName.
How can one tell Xcode (or the compiler) to redo the name-mangling?