Urgent issue. I rooted the device using Kingo, installed TWRP and then transferred the zip for the CM11 nightly and the gapps. I confirmed the nightly was for the D801 model which is T-mobile and the version of the G2 I have. Like a fool I forgot to backup my previous rom and TWRP says:
set_metadata_recursive: some changes failed
E:Error executing updater binary in zip '/sdcard/cm-11-20140208-NIGHTLY-d801.zip'
Error flashing zip '/sdcard/cm-11-20140208-NIGHTLY-d801.zip'
Updating partition details
And there's a red ominous 'Failed' at the bottom of the prompt. Please help, I have no idea what to do, I'm a noob at this. Help is greatly appreciated, thank you!