denispeplin/ror_ecommerce — comment on commit fa42c5653ae757e2eb95abd80bb16cc1ad17796a
File: Gemfile line 39
By drhenner:

Rake does not always play nicely even with minor versions. a minor version from 0.9.0 to 0.9.2 broke rails once. I'd hope this does not happen ever again but now I require specific versions of rake to be sure.

That said I should change this to 0.9.2.2