

Do you have a moodledata/lang/de folder in your server? Is there a mod_assign.php file in there?
Hi Visvanath,
The problem you describe has been reported as MDL-54731. It seems that all languages are affected, not just German.
A workaround is to go to Site administration / Plugins / Activity modules / Assignment / Assignment settings and enter the submission statement in the required language then save changes.