Oops. Back to where we were yesterday. Any tech selected in the theoretical tech window, opens details window, background is solidly black. Tapping the back or start button causes the whole screen to go black. I did restart my tablet, to no avail. I'm on an RCA Voyager II with Android 5.0. the game is still playable long as I do the research through the tech tree, the problem is only in the theoretical tech-tech details window.
Started a new game on tutorial (is that a new help person btw? It's been a long time since I ran the tutorial, looks awesome!). Colonized 1 planet, started 1 tech from the tree, selected a tech from the theoretical tech screen, it crashed again.