My medium updated to version 2.2,can't open menu options “save, save as, load, add mesh as clay, export", porgram to stop running, and pop-up window ”Medium has crashed“. Re-installing the software didn't solve the problem.
The problem has been fixed when I deleted the Preferences folder. I hope this method can help others solve the same problem. I can put myself into my work again. Thanks again to the medium team.