Hmm... you're running rails on windows..try the full path, but unfortunately I have little experience with rails on windows.

Use the full path to the file, or for something a little less machine-specific, start with RAILS_ROOT, e.g.;


I believe this will work with forward slashes on Windows, but try back-slashes if not. If it still doesn't work, just output that path to the screen to make sure it matches what you expect

BTW, when working with files, comes in handy a lot - does exactly what you'd think