Xcode 4.2 Product -> Run Greyed Out

Question

My "Run" button under "Product" is greyed out and after trying a few things from various forums, can't figure out what's gone wrong.

I've tried removing the project.xcworkspace and xcuserdata files and letting xcode generate new ones, but no...

My co-worker uses AppCode from IntelliJ and when he pulls the code, it runs just fine. But if he opens the same files in his Xcode, his "Run" is also greyed out.

Polydipsia

What is the XCode version are you using? And how long does it stay greyed out. What happens if you use keyboard shortcut Command + R – Kaveri

XCode 4.2, Command + R does nothing, it's permanently greyed out – Polydipsia

What happens when you create a new project and Build + Run ? – Kaveri

Other projects build and run just fine – Polydipsia

Can it do with the schemes? Are you sure you have a scheme that you know is the one you want? – Beverly

I had a similar issue with AppCode where I accidentally removed the product group and its content. It still worked in AppCode, but not in Xcode. The scheme and target settings were correct, but the "Run" menu item was grayed out and pressing the run triangle icon caused the code to compile, but nothing happened afterwards. Duplicating the app target and recreating a scheme for it fixed the problem. – Allomorphism

@LukasKubanek if only I had seen your comment a few hours ago :( duplicating target solved my problem. thanks. – Natie

Answer 1

My co-worker who uses AppCode had edited the configuration file, moved some frameworks around, etc... We noticed that there was a difference between XCode and AppCode in using relative vs. absolute paths in the project.pbxproj file.

Ultimately I just reverted the code to before his changes, so at this stage, I'm not entirely sure which difference in the config file actually caused Xcode to not be able to Run the project.

**EDIT From the .git logs, it looks like AppCode was adding relative directories with 7 sets of "/../" and before there were only ever instances of 5 "/../" to get back to the root directory. Rather frustrating that Xcode had no way of dealing with this from inside the IDE.

Polydipsia

same thing in 2015. somehow the scheme got corrupted and the executable ipa was unselectable in xcode. opening the project in AppCode and changing the executable for the scheme solved the problem. – Natie

Answer 2

"Edit" your current "Scheme":

Make sure you have "Run" checked for that build target:

Overanxious

The Scheme is fine, there was a difference between the relative directory structures that AppCode was editing pbxproj with and Xcode. – Polydipsia

@Polydipsia Ah, ok. Glad you got it fixed! – Overanxious

And changing "Executable" from none to XXX.app fixed my case. – Rundown

Answer 3

The scheme need to be fixed (I don't know why xcode changed it)
Here are the required steps:
, ,

Patiencepatient

worked for me! Thanks! This happened after I copied the product. It didn't set the schema automatically. – Chayachayote

Answer 4

Make sure you have the correct target selected.

(Upper-left in Xcode window, near the triangular Run button.)

Beesley