I have tried everything I can think of. I have this issue where whenever I try to open MonoDevelop, it will look like it’s loading and opening, and then will suddenly crash and close without any explanation. This happens when double clicking a script as well as just when trying to open MonoDevelop by itself. I’ve tried updating, uninstalling and reinstalling, and have had no luck. Any ideas?
if you are using mac pc then you have to give permission to monodevelop
go to application->open unity ->rit click on mono develop ->show package content ->rit click on Contents->get info sharing and permission change read to read/write and apply
For windows use “digzou” approach .