How do I set the date format correctly in BP Corporate theme?

Hi again,
I have BuddyPress Corporate Child theme Version 1.4.7 with BuddyPress 1.81 and bbPress 2.5.1 installed. Wordpress is version 3.7.1.
I set the date format in the blog settings to "j. F Y", in the BuddyPress Corporate translation file I changed the original string "F jS, Y" to "j. F Y".
In my featured article post the date now shows as "Dezember 11th" - it should be "11. Dezember 2013".
Also in the bp-corp Featured Categories Widget the date shows as "Dezember 12th 2013" - again it should be "11. Dezember 2013".
Can someone help?