I am trying to get Cyanogenmod onto my Bionic. I have done a complete factory reset on my phone and gone through the steps here:

How To Install CyanogenMod Android for Motorola Droid Bionic ("targa") - CyanogenMod

over and over and over again. Everytime I end up with the error:

>adb.exe install Safestrap-RAZR-D4-BIO-3.11.apk
1676 KB/s (4632217 bytes in 2.698s)
pkg: /data/local/tmp/Safestrap-RAZR-D4-BIO-3.11.apk
Failure [INSTALL_FAILED_OLDER_SDK]

And that's it. Nothing else. I've followed that guide to the T. I've updated stuff, I've sacrificed chickens... nothing is working. Searching for "INSTALL_FAILED_OLDER_SDK" apparently is blocked here on the forum because it tells me it's too common of a search term or something. And the gagillion hits I get on Google seem to be all over the place on what the issue really is.

Can someone please shed some light on what is wrong here?