This problem stems from an improper setup as mentioned by ishkawa. I'd like to post the entire error in its entirety in case anyone else runs into the issue:
From:
~/Library/Logs/CoreSimulator/coresimulator.log:
: installApplication:withOptions:error:: Error Domain=IXUserPresentableErrorDomain Code=1 "This app could not be installed at this time." UserInfo={NSLocalizedDescription=This app could not be installed at this time., NSUnderlyingError=0x7f83c58969c0 {Error Domain=MIInstallerErrorDomain Code=11 "Bundle at path /Users/userName/Library/Developer/CoreSimulator/Devices/08FE45B1-C973-45B4-816F-443BD6060102/data/Library/Caches/com.apple.mobile.installd.staging/temp.9KckPp/extracted/Payload/TwitterPart2.app/Frameworks/TwitterCore.framework has missing or invalid CFBundleExecutable in its Info.plist" UserInfo={LegacyErrorString=MissingBundleExecutable, FunctionName=-[MIExecutableBundle _validateWithError:], SourceFileLine=78, NSLocalizedDescription=Bundle at path /Users/userName/Library/Developer/CoreSimulator/Devices/08FE45B1-C973-45B4-816F-443BD6060102/data/Library/Caches/com.apple.mobile.installd.staging/temp.9KckPp/extracted/Payload/TwitterPart2.app/Frameworks/TwitterCore.framework has missing or invalid CFBundleExecutable in its Info.plist}}}
The problem is that TwitterCore was embedded.
- Open the app's Xcode project or workspace.
- Go to the app target's General configuration page.
- Remove TwitterCore.framework from the Embedded Binaries section.