I where working with a project and I closed because my computer was geting slow. When I tried to open my solution again xcode quitted. So everytime I try to open my project I ge
There are a couple of things you can try, first make sure Xcode is not running ,trash the ~/Library/Cache/ folder contents, and trash the contents of the ~/Library/Developer/Xcode/DerivedData/ folder, if you what to can just find the stuff for your project in ~/Library/Developer/Xcode/DerivedData/ and trash just that. Then restart your computer.
If that doesn't work, rename your faulty projects folder to so method like ' old', create a new project of the same name, and then move all of the source files from ' old' to you new project and add them. Its a bit painful I known but I have had to do this once to get a project working again.