Added course in exception message for InvalidTabsException.

common/lib/xmodule/xmodule/course_module.py

@@ -16,7 +16,7 @@ from xmodule.course_metadata_utils import DEFAULT_START_DATE
 from xmodule.exceptions import UndefinedContext
 from xmodule.seq_module import SequenceDescriptor, SequenceModule
 from xmodule.graders import grader_from_conf
-from xmodule.tabs import CourseTabList
+from xmodule.tabs import CourseTabList, InvalidTabsException
 from xmodule.mixin import LicenseMixin
 import json
 
@@ -976,8 +976,11 @@ class CourseDescriptor(CourseFields, SequenceDescriptor, LicenseMixin):
         if self.discussion_topics == {}:
             self.discussion_topics = {_('General'): {'id': self.location.html_id()}}
 
-        if not getattr(self, "tabs", []):
-            CourseTabList.initialize_default(self)
+        try:
+            if not getattr(self, "tabs", []):
+                CourseTabList.initialize_default(self)
+        except InvalidTabsException as err:
+            raise type(err)('{msg} For course: {course_id}'.format(msg=err.message, course_id=unicode(self.id)))
 
     def set_grading_policy(self, course_policy):
         """