How do I cure an otool execution failure?

Question

I get the following error when attempting to install something via brew:

$~:brew install carthage
Error: Failure while executing: /usr/bin/otool -L /usr/bin/install_name_tool
$~:

How do I resolve this?

Answer 1

Cause: path included 'xcode.app'; but am using 'xcode-beta.app'.
Solution: renamed 'xcode-beta.app' to 'xcode.app'.