Hi,I can't remember if SABA 5.3 still has Content Builder but I corrected my problem by trying to edit the course using Content Builder.This gave me an error message saying that the MaxTimeAllowed attribute had to be in HHHH:MM:SS format. I clicked on OK and then Saved the content again and Lo! all the errors had gone.When I check the imsmanifest.xml file the format was 00:00:00 for the MaxTimeAllowed.When I had published from Lectora to SCORM I had left that option blank.Hope this helpsAndy