Aastra 6757i and XML scripts

I use XML scripts from Aastra on my 6757i phone. http://www.aastratelecom.com/cps/rde/xchg/SID-3D8CCB6A-3A6C9D3D/03/hs.xsl/23485.htm

One of the softkeys are programmed with contacts.php

/var/cache/aastra/contacts.txt look like this (test file):
First name, Last name, Company, Title, Work, Home, Mobile

Asterisk has write and read rights to contacts.txt

When I choose “lookup” on the phone i get:
Result (1/1)

Without any contacts listed, when I press “select” I get: “Cannot display”

Any suggestions?