Pretty sure the red text is normal after the unlock. For the rom flash, did you also flash the boot.img via fastboot? I am certain that would have been in the instructions for installation of the rom, as it is standard for 99% of HTC Dev unlocked phones.
Also, which HTC One XL do you have? Is it from a particular region or carrier as that can be important to which files are needed to fix it. And what update was it on?