Index: lams_learning/src/java/org/lamsfoundation/lams/learning/service/LearnerService.java
===================================================================
diff -u -r8aded0b18a5a7712622ae56f38923fa297449977 -r67f37ba3cebd32eb27d1e7a0d0fcbc23cbb5eb1f
--- lams_learning/src/java/org/lamsfoundation/lams/learning/service/LearnerService.java	(.../LearnerService.java)	(revision 8aded0b18a5a7712622ae56f38923fa297449977)
+++ lams_learning/src/java/org/lamsfoundation/lams/learning/service/LearnerService.java	(.../LearnerService.java)	(revision 67f37ba3cebd32eb27d1e7a0d0fcbc23cbb5eb1f)
@@ -1062,8 +1062,13 @@
 	    } catch (InterruptedException e1) {
 		// do nothing, it does not hurt us
 	    }
-
-	    toolSession = lamsCoreToolService.createToolSession(learner, toolActivity, lesson);
+	    try {
+		toolSession = lamsCoreToolService.createToolSession(learner, toolActivity, lesson);
+	    } catch (DataIntegrityViolationException e1) {
+		LearnerService.log
+			.warn("There was an attempt to create two tool sessions with the same name. Retry failed, carrying on",
+				e1);
+	    }
 	}
 	if (toolSession != null) {
 	    toolActivity.getToolSessions().add(toolSession);