Hey, yes the crash when adding two animated images should be fix in next one (0.10.1.2)
Adding more frames ? That sounds strange, I'll check there is not a regression here, thank you
Edit: it looks fine for me. 5FPS, 1s get 5 frames. try to verify the fps didn't change between 0.10 and 0.10.1. I updated how it is saved. I handled the change between 0.10 -> 0.10.1 but the opposite isn't possible, maybe that's why you got smoother animation.