We also are getting the Could not insert workshop element! message. During the initial setup of the strands for the accumulative type assessment. For past workshops we had figured out that you cannot save anything until there is something typed in every element and it had to be typed or copied in rather quickly. Once the elements were saved, the teacher used to be able to go back and ammend them and save regularly with no error message. However, we are running the latest stable version of Moodle and this workaround does not seem to be working anymore. In fact, I have had teachers go back to ammend elements and the elements that are just below where the edit is are totally deleted. This has been such a valuable learning tool up until this point, I hope that we can continue to use it!