Random game breakdowns

this is going to be hard to explain but the game breaks down quiet often on me. Typically this in the form of not being able to generate a new map/creating a new char with out crashing horribly. More recently was a problem where the save game lost its map data, IE I press M and everything is just a field and starting a new game threw an error message “could not find shelter” and spawning a wilderness only map. Typically i solve this by just deleting all the files and unzipping the game again but I am having to do this a couple of times a day now (mainly because my char only survives like a day and a half at best)