It seems to only crash while trying to sync up. If I start it without an Internet Connection it works fine, but as soon as I do anything else with an internet connection, it crashes. This means that…
Chopchopchop, Can you update to Sketch 2.0.1 on your iOS 7 device and see if the blotchy strokes show up there? Sketch 2.0.1 was just released last weekend and should fix your crash on launch…