I am running Lectora Inspire 18. The Next button only has the action – OnMClkGoto Next page.
It operates fine in the Reviewlink version and in Run and Preview mode in Lectora.
Once published to html, I launched it from running the Index chrome html document it will not advance past the first questions as I get the error.
I might be doing something wrong as I just started using this software after purchasing the large package. I will go into the Intermediate training today and watch those videos to see if I am missing something that might be covered in there.