Some puzzles will not load, regardless of browser

I have at least 5 puzzles that will not load in any browser tested (FF, Chrome & IE).
But, other puzzles seem to load normally.
Can someone please test and identify the issue.
the puzzles are

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These puzzles have invalid tutorial scripts. These are either tests or unfinished projects. Contacting the author(s) seem to be the way to go in order to have the issue properly fixed.