Three Issues: GIF backgrounds turning black / Can't center Wordtube videos / Bullets

I just upgraded to Atahualpa 3.4.9....

= all of a sudden my gifs have a black background in the transparent areas - all of them, including new uploads. google shows a lot of folks have the problem, bu no clear answer to solving the problem. ideas?

= i am using wordtube which works great - but all kinds of problems centering the video.

= also, i want to put a line feed between my bullets but they are always stripped out when i update page. using tinyMCE Advanced and clicking the "Stop removing..." but still have the problem.

Any help appreciated - especially with the black gif problems

Robert