rails app deploy error - 'blueprint / screen.css未预编译'

I'm trying to deploy a rails app... and I'm following the capistrano deployment guide. I'm stuck at the test stage where I am supposed to run app.get("/") in the rails console. When I do so I get an error message related to the blueprint css tools I'm using in my app. Has anyone encountered a similar error about blueprint not being pre-compiled? I have no idea what to do next to try to fix this error. Thanks in advance for any suggestions you might have!I'm trying to deploy a rails app... and I'm fol