I keep running into this situation. I have existing Rise courses that are already published into my LMS and working fine. These courses contain a few different video files. I have made updates to some material in the course (not the videos) but when I republish them and try to upload into the LMS it stops uploading about half way through and just stalls. File size should not be an issue because the only change I made was changing some existing text and swapping out a basic image and the current version works just fine in the LMS. LMS we use is SAP Success Factors.