I'm definitely very late to this discussion but want to see if Gem is still considered a good enough tool for visual programming? I have tried to install it on Linux over the past few weeks and in a lot of cases it just doesn't work. But even when it does, it is not able to playback video well, which means I have to now get inside the video backend stuff and maybe compile the library myself....
So now I am seriously wondering if going through this trouble is even worth it if the library is not being maintained or people are moving away from it.

are you on a Mac @xaverius? did you find a fix for this at all?