"Create it with LiveCode" course videos don't work (Updated)

[mluka]

Hi.

Tried a "Trial" of this course but after the first 20-some minutes, impossible to continue...

Had to look at the "slides". But even those quit after slide No. 17 or 18, halfway through the lesson!

What gives?

Thanks.

Later on...
In "Lesson 1, Day 2", titled "Hello Stacks and Cards", I can hear the sound, but the video is frozen and doesn't change...

Very confusing!!!

Still later on...
at 5:06 into the lesson, it just stopped! In mid-sentence!

2015-07-26: According to Wistia this could be a Firefox problem. Will try again with Safari and report later next week.

2015-07-28: Using Safari I was able to look at two lessons without any problem at all. According to Wistia (Livecode's supplier) the problem lies probably with Firefox, not LC.