The file is already a zip file so make sure you rename it PD98IMG only. If you rename it PD98IMG.zip you will end up with PD98IMG.zip.zip which phone will not recognize and is a very common mistake people make.
PHONE: AT&T Samsung Galaxy S4 (MDL)
ROM: Goldeneye V12
KERNEL : 3.4.0 talexop 1.3+
MODEM : I337UCUEMJ9