If you cannot get TextMate to use the correct bundles for Ruby on Rails and RSpec code, then you may have manually modified the bindings in a way that confuses TM.
These instructions will fix the problem.
$ sudo fdisk -l
$ sudo mkdir /media/myusb
$ sudo mount -t ntfs-3g /dev/sdb1 /media/myusb
$ sudo umount /media/myusb