I meant to install CyanogenMod and its loader only on the memory card, but it seems to have insinuated itself onto the device itself. Now I'm having battery rundown issues when I'm using the Nook software, so I want to upgrade to 1.4. So I copy the 1.4 image to the root of the device and it reboots as part of the installation process. The problem is that on reboot, Clockwork Recovery gives me an exclamation point symbol because it doesn't like the MD5 of the file or something and I can't upgrade. Help!