Xcode 9 Beta 3 broke my project on 8.3.3

Developer Tools & Services Xcode
IatroCom OP
Created Jul ’17
Replies 2
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After installing Xcode 9 Beta 3 and running my project it no longer runs with Xcode 8.3.3.

This is a big problem because I can no longer install my app onto the app store now.

When I try to run my project with 8.3.3 I keep getting this error:


Command /Applications/Xcode.app/Contents/Developer/usr/bin/momc failed with exit code 1


I tried to remove and reinstall Xcode 8.3.3 after removing Xcode 9 Beta 3 all to no avail.


Backup copies of the project won't run either now.


Any ideas how to fix this mess?


I won't be testngi anymore Beta stuff for Apple anymore.

Replies  2
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Claude31 OP
Jul ’17

I wish you find a fix.


Haven't you access to another Mac where to install XCode and try to get back your App ?


I think the bet practice is not to install a beta on production machine (in fact I don't install immediately a new version, even not beta) on production machine until I have done some tests with it on a test Mac.

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IatroCom OP
Aug ’17

I did manage to post the app from another machine.

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Xcode 9 Beta 3 broke my project on 8.3.3
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