Publishing as HTML - buttons not working

I need some help from the community! I am trying to publish as a HTML in Lectora X.6 and it keeps crashing my Lectora - I can't even preview this title in the browser. All I have in the title is the embed code to a video and a few buttons.


In another title I have, once I publish, the buttons to do not work. I have the buttons with an action go to [IX[/I] side. They work in preview mode, but not in the browser, why?


I would love some help.

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