No route matches "/users//comments" with {:method=>:post}

I'm now getting- No route matches "/users//comments" with {:method=>:post} whenever I try to submit a form for comments that is assigned to each individual user. The confusion thing is that I'm doing all this on a "home" controller, so I always tend to miss stuff here and there. (I'm trying to follow ryan bates beginners 15 min blog tutorial)

So basically I used restful_authentication to get my login/logout, and I attempted to follow ryan's tutorial, but I'm getting funky errors having to do with my variables not being defined, etc, because instead of putting comments in the posts, I'm attempting to put comments under each user generated by restful_authentication

so if i get No route matches "/users//comments" with {:method=>:post}, usually whats wrong here, and how can i fix it?? theres a wierd double slash.... >.<

Sorry, complete newbie, i need everyone's help. :slight_smile: Appreciated

-David