Arduino IDE hangs on startup

Hi, I made a bad mistake. I moved the folder with an arduino sketch to another place. Unfortunately it was the last used sketch from the IDE. After moving the folder I' not albe to start the IDE, it hangs on startup, only the logo is shown. I think this is because it tries to load the last used sketch and is not able to find it. I tried to move the folder back, installed the ide new - nothing helps. Maybe I have to remove a file were the last used sketches are stored? Where could I find this on mac or how could I make a new clean installation? In the program folder I see only the program fiel but no config files or so...

I'm on a Mac

You should consider uninstalling the IDE (https://support.arduino.cc/hc/en-us/articles/360021325733-How-to-do-a-complete-uninstall-of-the-Arduino-IDE ) and installing the newest version 1.8.16 (https://www.arduino.cc/en/Guide)

Hi @krammerj. Which version of the Arduino IDE are you using?