Xcode 10 unexpected duplicate task: CopyPlistFile

Question

Today I updated my Xcode from v.9.4.1 to v.10.0. Now I try to build my tvOS project and I see the following error: unexpected duplicate task: CopyPlistFile /Users/username/Library/Developer/Xcode/DerivedData/MyApplication/Build/Products/Debug-appletvos/MyApplication.app/Settings.plist /Users/username/project_folder/Settings.plist (in target 'MyApplicationTarget'). I tried to reinstall pods (I use CocoaPods 1.6.0 beta) and clean build folder, but it does not help. How can I solve this problem in Xcode 10?

Answer 1

I was getting this for a core data model .xcdatamodeld, It turned out the model file was listed under both "Compile Sources" & "Copy Bundle resources" in Build Phases. Removed it from the latter and it build in Xcode 10 finally!

Answer 2

Faced same problem. Resolved it using following

go to Target -> Build Phases

Check if your file is appearing in both Compile sources and Copy Bundle Resources section, if yes remove it from Compile Sources

Answer 3

File -> Workspace Settings -> Change New Build System to Legacy. It worked for me .

Answer 4

In my case, the conflicting files were not listed in Copy Bundle Resources but only in Compile Sources section.

I went in project navigator, selected the file, and in File Inspector / Target Membership unselected and again selected the app target (untick and tick checkbox next to app target).

The files disappeared from 'Compile Sources' and appeared under 'Copy Bundle Resources' and I was able to continue with the build process.

Answer 5

Go look at that target’s build phase that copies resource files and see if your Settings.plist is listed more than once.