Simulations looping in Captivate 7

I developed a course using Captivate 7 that includes training simulations. I published it without any LMS settings as the course needs to be approved by a list of approvers. Here's the issue. Half of the approvers viewed the course without any problems short of the exit button not working, which I'm aware of. The other half of the approvers, consistently experience a loop when in the middle of the first simulation. Upon depressing the Enter button in the simulation  it throws them all the way to the beginning of the course.
I've tried playing the simulation at least 15 times and it works fine for me. Am I missing a setting?
Does anyone have any idea why being in the middle of a simulation and depressing the Enter button, throws some of the viewers to the beginning of the course while others can go through the entire course without a hiccup?
Please help we need to get this approved and loaded to the LMS.
Thank you

Unfortunately, I’m unable to sit with them since they are spread out throughout the country. I did however have one of the approvers share their screen with me, but was not there to physically see if she hit any specific keys that threw her into the loop.  Could Microsoft Silverlight not work well with Captivate? The reason I ask is, out of the 16 courses created using Captivate 7, this is the only course that has given me an issue with recording simulations using the company product.

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