If you are rocking an HTC One XL from AT&T, Rogers, Telus, or any version that comes with the Snapdragon S4 processors AND you're modded (i.e rooted, running a custom rom), you need to upgrade your recovery.
TWRP users need version 2.7.
2.6 is not compatible anymore.
Get it here: TWRP 126.96.36.199 Unofficial - xda-developers
Thanks goes to my friend, Pandasa123.
-Wizzrah, AC Ambassador.