[Radiant] undefined method `paginate' for SnippetFile:Class

[Erasmo da Narni]

hello! i just did a fresh install on mac osx 
following: https://github.com/radiant/radiant/wiki/Installing-on-Mac-OS-X
i had to downgrade rake to 0.9.6 to proceed with the db bootstrap.
i get the referenced error in the admin snippet files tab.
any help on how to fix this issue?
many thank in advance. --e