Ok, thats your problem you need the New Zealand postcodes in this file.
This is in the NZ images, but perhaps not in the earlier AU images..
This is my file and the standard file I've included in the NZ images.
Ensure you use 1 tab between the zone and the 'Pacific/Auckland'
Code:
# A list of TiVo postcodes and the timezones that they represent
# Two columns, separated by one tab only.
#
00800 Australia/Darwin
02000 Australia/Sydney
02600 Australia/Sydney
03000 Australia/Melbourne
04000 Australia/Brisbane
05000 Australia/Adelaide
06000 Australia/Perth
07000 Australia/Hobart
64000 Pacific/Auckland
# New Zealand
02112 Pacific/Auckland
02113 Pacific/Auckland
02114 Pacific/Auckland
02115 Pacific/Auckland
02116 Pacific/Auckland
Set that up and post results thanks.