Strange problem connecting to LinkedIn

Hello, So I installed the 'linkedin' gem, an oauth wrapper allowing you to connect to LinkedIn. I followed this tutorial (http://pivotallabs.com/users/will/blog/articles/1096-linkedin-gem-for-a-web-app) quite fastidiously, and was successful in pulling and saving authentication token and the authentication secret to the database.

So in a different method, I call create a new LinkedIn client, call client.authorize_from_access, and then try to access client.profile. Here things melt down, and I get a very peculiar "uninitialized constant LinkedIn::Profile::ROXML."

I also ran the example code (http://github.com/pengwynn/linkedin/blob/master/examples/authenticate.rb) off github in console, and got the same error. I've spent a good many hours trying to figure this out, but to no avail. Any help would be appreciated! Thanks!

http://pastie.org/1121872