WatchKit apps must have a deployment target equal to iOS 8.2 (was 8.3)?

Question

I just downloaded Xcode 6.3 beta 4, and my WatchKit app now fails to build with an error:

Embedded Binary Validation Utility Error
error: WatchKit apps must          


        

Answer 1

Ran into this myself. Seems like a bug in Xcode 6.3 beta 4.

I analyzed the project.pbxproj file (in text view) of a freshly created project with a WatchKit extension. It looks like there is a setting:

IPHONEOS_DEPLOYMENT_TARGET = 8.2;

...which is missing from our projects created with earlier Xcode versions.

So I manually copied this setting into the Debug and Release configurations of my project. This error went away.

I then got another error about a version mismatch between my app and the WatchKit app target. Fixing this version mismatch allowed the build to compile clean and run fine.

I know this is a bit hacky, but I'm guessing it's relatively safe.

When searching through the project.pbxproj file, you will want to match against this search term: "_WatchKit_Extension". This should identify the area near where the new instruction should be added.

Discussion thread in Apple forums:

https://devforums.apple.com/thread/266033?tstart=0

Excerpt from a fresh project:

4F9F32751AC2024F00673D86 /* Debug */ = {
            isa = XCBuildConfiguration;
            buildSettings = {
                ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
                GCC_PREPROCESSOR_DEFINITIONS = (
                    "DEBUG=1",
                    "$(inherited)",
                );
                IBSC_MODULE = Bogus_WatchKit_Extension;
                INFOPLIST_FILE = "Bogus WatchKit App/Info.plist";
                IPHONEOS_DEPLOYMENT_TARGET = 8.2;
                PRODUCT_NAME = "$(TARGET_NAME)";
                SKIP_INSTALL = YES;
                TARGETED_DEVICE_FAMILY = 4;
                "TARGETED_DEVICE_FAMILY[sdk=iphonesimulator*]" = "1,4";
            };
            name = Debug;
        };
        4F9F32761AC2024F00673D86 /* Release */ = {
            isa = XCBuildConfiguration;
            buildSettings = {
                ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
                IBSC_MODULE = Bogus_WatchKit_Extension;
                INFOPLIST_FILE = "Bogus WatchKit App/Info.plist";
                IPHONEOS_DEPLOYMENT_TARGET = 8.2;
                PRODUCT_NAME = "$(TARGET_NAME)";
                SKIP_INSTALL = YES;
                TARGETED_DEVICE_FAMILY = 4;
                "TARGETED_DEVICE_FAMILY[sdk=iphonesimulator*]" = "1,4";
            };
            name = Release;
        };