Hi, so today I opened my autodesk sketchbook app and first it opened my last sketch by default. But when I click on some tools or start drawing it crashes automatically and it happens every time. But the worst thing is that all the sketches except this last one are gone from the gallery. How can something like this happen and what can I do to find my lost sketches and avoid that happening in the future? I really love the app but this is f***ed up..