Rails: Bundler::GemNotFound

Question

I'm using Rails on Passenger and getting:

Could not find multi_json-1.7.3 in any of the sources (Bundler::GemNotFound)

I assume I just need to install multi_json but it was working a few days ago so I'm curious - what's the best way of solving this problem?

Answer 1

I experienced this exact same problem on OSX 10.8 after making a system update. After running bundle update , I was able to get things working normally again.

While bundle update worked for me, in my research, I came across citations from other users who allege to have successfully resolved this issue by deleting their vendor/cache folder, thereby forcing Bundler to rebuild existing gem installations.