I found the answer I was looking for (was there ever any doubt?… OK, I can see there was…)

Here is the code that would NOT work:
[html]
[/html]

and here is the code that DOES work:
[html]
[/html]

So the answer is simple, just remove that transparency parameters and it should work! I hope more people find this useful…

P.S. I’d like to thank Amit of Canned !! – my Atropine for creating iG:Syntax Hiliter that shows the code in plain text and in color formating. Great job!

Update 30 July 2014: As one can see now, both command blocks work and you see the video twice. Some times, all that is needed is time…