I have two apps: one in Objective-C, the other one in Swift.

Both have:

PrefWindow.xib
PrefWindow.xib (Base)
PrefWindow.strings (German)
…

The problem is:

1. The Objective-C version just ignores PrefWindow.strings.
2. The Swift version prints (whenever it should show the window):

… [strings] ERROR: QvC-M9-y7g.title not found in table PrefWindow of bundle CFBundle 0x100d02860 </System/Library/Frameworks/AppKit.framework> (not loaded)
…

But PrefWindow.strings (German) has:
/* Class = "NSWindow"; title = "Preferences"; ObjectID = "QvC-M9-y7g"; */
“QvC-M9-y7g.title" = "Einstellungen";

What am I doing wrong?

Gerriet.