TypeError when finding oauth token(Mongoid)

[thefron]

When requesting a request token, i get an error:
TypeError (can't convert Hash into Integer):
app/models/client_application.rb:48:in `verify_request'
I backtraced in and figured out that the error is from oauth/rack/oauth_filter.rb:31
oauth_token = client_application.tokens.first(:conditions=>{:token => request_proxy.token})
I think it should be something like this:
oauth_token = client_application.tokens.where(:conditions=>{:token => request_proxy.token}).first

[thefron]

I figured out that this doesn't happen with 0.4.0.pre5 version anymore