Originally Posted by The Sickness
It's best to use the latest version of TWRP 2.6. Older versions "sometimes" have problems flashing 4.3 roms.
My S4 Is Insane
On that note, it may just be me but the newest version of TWRP (220.127.116.11) was giving me some pretty bad problems flashing stock TW 4.3 ROMs... i.e. baseband not showing up, Settings->About->Status would force-close, and I could not get any cell signal. That happened on Wicked, Hyperdrive, and WarpDrive. Couldn't restore backups of said ROMs either.. I mean, it would let me restore but I would hang at the S4 splash screen. I say it was TWRP because once I downgraded back to 18.104.22.168 my backups worked again and I no longer had the phone/signal problems in TW 4.3.