In our test environment I am missing multiple translation strings in the shell menu.
[Missing text /shell/cms/menu/edit for en]
[Missing text /shell/cms/menu/admin for en]
Screenshot here: http://oi50.tinypic.com/1tlybp.jpgOn my developer environment they render just fine. This wasn't an issue with CMS6 R1.
Try copying the lang folder from your developer environment to you test. I guess something is missing.
You were correct. Somehow not all lang files had been copied to the test environment. Thanks.