I see this when I try to import an XML template. The XML is clean, so I'm puzzled by the problem:

Fatal Error $error->code: Document is empty [ Line: 1 | Column: 1 ]
Fatal Error $error->code: Start tag expected, '<' not found [ Line: 1 | Column: 1 ]

<?xml version="1.0" encoding="UTF-8"?>
<zabbix_export version="1.0" date="25.01.10" time="16.12">
<hosts>
<host name="

The XML looks good to me, so I don't get this error. Is it possible my libxml is outdated, in spite of the listed requirement?

PHP version 5.3.1 5.0 5.3.0 Ok
PHP memory limit 256M 128M 256M Ok
PHP post max size 32M 16M 32M Ok
PHP max execution time 600 300 600 Ok
PHP timezone America/Austin Ok
PHP databases support MySQL
Oracle Ok
PHP BC math yes Ok
PHP MB string yes Ok
PHP MB string overload yes Ok
PHP Sockets yes Ok
PHP GD 2.0.34 2.0 2.0.34 Ok
GD PNG Support yes Ok
libxml module 2.6.23 2.6.15 2.7.6 Ok
ctype module yes Ok