Course will not advance to last slide in Cornerstone but works fine in other systems.

I have a Storyline project with 7 individual published parts. Each part was published as an LMS with SCORM 1.2 settings. This training material is intended to be made available to trainees via our corporate learning management system that is hosted by Cornerstone. I am having the same exact issue with all 7 parts. The issue it that when the courses are uploaded to our (Cornerstone) LMS, the course will not advance to the last slide. The courses are set up to advance to the next slide when the user clicks on the "Next" button. This works fine on every other slide. However, when the user gets to the next to last slide and clicks the "Next" button, it appears that the last slide will not load, almost like the course is waiting for the last slide to load. When we tested the courses in Review 360, we do not have this issue. We have also tested the courses in SCORM Cloud and other LMS test sites and do not see the last slide access issue. In fact, when I run through the courses in our corporate Cornerstone LMS on my own company issued PC, I sometimes see the issue and sometimes do not. I have contacted to admin for our LMS and explained the problem but they insist the issue is with the content. It may be but I do not know of anything I can do the change the content. I am open to any suggestions and I am willing to share the .story files and/or the zipped LMS files, pending approval from our corporate legal dept. Any ideas?