Localizable.strings not working in iOS

I found the answer myself.

Besides cleaning and building the project again and all that I described above. You must also delete the app in the iPhone simulator and then build it again! After that it works perfectly.

Talk about making it simple Apple...

Be sure that:

1. The file is called: "Localizable.strings".
2. "Localizable.strings" belongs to the target you are dealing with.

A few checks:

1. Make sure the filename is exactly Localizable.strings and is included in the target
2. Every string is ended with ;
3. Every string is double quoted with "
4. Comments begins with // (NOT #)