Mantis 1.2.0rc1 with MantisBT Formatting 1.0a and default settings.

When I choose XML Export from View Issues I get the following error: (FireFox 3.0.11)

File Not Found
The file http://dvlibra/mantis/plugin.php?page=XmlImportExport/export cannot be found. Please check the location and try again.

[root@dvLIBRA XmlImportExport]# find .
.
./pages
./pages/import_action.php
./pages/export.php
./pages/import.php
./XmlImportExport.php
./mantis.dtd
./lang
./lang/strings_japanese.txt
./lang/strings_russian.txt
./lang/strings_dutch.txt
./lang/strings_german.txt
./lang/strings_swissgerman.txt
./lang/strings_occitan.txt
./lang/strings_english.txt
./lang/strings_ripoarisch.txt
./lang/strings_french.txt
./lang/strings_galician.txt
./ImportXml
./ImportXml/Issue.php
./ImportXml/Interface.php
./ImportXml/Mapper.php
./ImportXml.php
[root@dvLIBRA XmlImportExport]#

[root@dvLIBRA ~]# cat /etc/redhat-release
CentOS release 5.3 (Final)
[root@dvLIBRA ~]# php -v
PHP 5.2.6 (cli) (built: Sep 15 2008 20:42:05)
Copyright (c) 1997-2008 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies
[root@dvLIBRA ~]# mysql -V
mysql Ver 14.12 Distrib 5.0.45, for redhat-linux-gnu (i686) using readline 5.0
[root@dvLIBRA ~]# httpd -v
Server version: Apache/2.2.3
Server built: Jan 21 2009 22:01:41
[root@dvLIBRA ~]#