0.13 to 0.18 is a big jump in content and system changes. Sorry the old version isn't working, if you REALLY don't want to start a new, fresh save and want to continue from where you left off. I suggest updating the game in increments. eg. 0.13 > 0.15 > 0.17 > 0.18. Play a card battle with each update to make sure things are working properly and make a new save file.
You can find all the previous versions here: