Open RM and tap the flash/install ClockWork recovery. Make sure you receive install successful. If so, proceed to download BB, make a backup, wipe data and cache. If not, try to reinstall CW. If you have issues scroll to the bottom of RM and tap Install Alternate recovery (SPRecovery) If that installs then try to install CW again.
The RRS (recovery replacement system) strikes again. Don't be surprised if you see that screen again. If you do, let me know, and I'll talk you through fixing it so you never have to worry about it again.