If anyone has a REAL GPE or a converted GPE you will notice you can't flash any ROMS without getting errors. I investigated into this and this is what I found. The system partition is only a little over 1 gig where the sense system partition is 2.8 gb. So if you try to flash a sense rom on a GPE or a converted HTC m8. It will fail (because the partition is too big for the gpe partition). The only way to correct this is to flash a sense RUU when it's available.
I'm working on a new GPE conversion RUU that will use a bigger system partition. If this works (which I'm not sure it will) then it will be easy for people who to convert to go back..
Just figured I'd let everyone know.. This was NOT tha case with the m7!