Storyline Embedded in Rise Publish to SCORM Error Publishing in Cornerstone

So... New info to add to this thread.

I ran into this issue in a major way this week. Now, after a LOT of trial and error, I solved my case. I had the critical error: "the file ___ already exists" when uploading to Cornerstone LMS. (Interestingly enough, SCORM Cloud test engine could handle the file perfectly).

I had a branching course in RISE, and had slightly different information in each branch, for different audiences. However, there was one embedded Storyline block that BOTH paths used. Apparently both of them tried adding the same files to the same folders, and confused Cornerstone's uploader. I finally figured this out, and solved the issue by re-converging the paths a bit sooner, placing the SL block in only one place.