Something seems to be broken since the upgrade to Mavericks. Macgems don’t want to load anymore:

Robs-iMac:~ rob$ macgem list

/usr/local/bin/macgem:9:in `<main>': undefined method `summary_indent=' for class `OptionParser' (NameError)

This is just an example. A ‘require macgems’ followed by e.g. ‘require uri’ results in similar errors.

Anyone any clue? 