I just tried Krita for the first time, and after drawing for a bit I saved my file and the app is not responding, if I click inside the window my computer makes the "no touchy" sound like there is another window open somewhere, but there isn't. Incidentally all of the drop down menu options are grayed out, as well. I don't think the file saved and I don't want to trash what I have if I were to close out of the program. I've searched high and low for an answer but cannot find one.