diff --git a/doc/rpm-build/egroupware-1.6.spec b/doc/rpm-build/egroupware-1.6.spec
index e6633afacc..842126d269 100644
--- a/doc/rpm-build/egroupware-1.6.spec
+++ b/doc/rpm-build/egroupware-1.6.spec
@@ -9,7 +9,7 @@
 	%define source5 egroupware_suse.tar.bz2
 	%define distribution SUSE Linux %{?suse_version}
 	%define php php5
-	%define extra_requires apache2-mod_php5 mysql php5-mysql
+	%define extra_requires apache2-mod_php5 mysql php5-mysql php5-dom
 	%define cron cron
 %endif
 %if 0%{?fedora_version}
@@ -19,7 +19,7 @@
 	%define source5 egroupware_fedora.tar.bz2
 	%define distribution Fedora Core %{?fedora_version}
 	%define php php
-	%define extra_requires httpd mysql-server php-mysql
+	%define extra_requires httpd mysql-server php-mysql php-xml
 	%define cron crontabs
 %endif
 %if 0%{?mandriva_version}
@@ -29,7 +29,7 @@
 	%define source5 egroupware_fedora.tar.bz2
 	%define distribution Mandriva %{?mandriva_version}
 	%define php php
-	%define extra_requires httpd mysql-server php-mysql
+	%define extra_requires httpd mysql-server php-mysql php-dom
 	%define cron crontabs
 %endif
 %if 0%{?rhel_version}
@@ -39,7 +39,7 @@
 	%define source5 egroupware_fedora.tar.bz2
 	%define distribution Red Head %{?rhel_version}
 	%define php php
-	%define extra_requires httpd mysql-server php-mysql
+	%define extra_requires httpd mysql-server php-mysql php-xml
 	%define cron crontabs
 %endif
 %if 0%{?centos_version}
@@ -49,7 +49,7 @@
 	%define source5 egroupware_fedora.tar.bz2
 	%define distribution CentOS %{?centos_version}
 	%define php php
-	%define extra_requires httpd mysql-server php-mysql
+	%define extra_requires httpd mysql-server php-mysql php-xml
 	%define cron crontabs
 %endif
 
diff --git a/importexport/setup/default_records.inc.php b/importexport/setup/default_records.inc.php
index 31ac816c32..3f9155104e 100644
--- a/importexport/setup/default_records.inc.php
+++ b/importexport/setup/default_records.inc.php
@@ -9,6 +9,11 @@
  * @version $Id$
  */
 
+if (!extension_loaded('dom'))
+{
+	echo "<p>Required PHP DOM extension missing, installation of ImportExport definitions aborted.</p>\n";
+	return;	// otherwise we mess up the whole eGroupware install process
+}
 require_once(EGW_INCLUDE_ROOT. '/importexport/inc/class.bodefinitions.inc.php');
 
 // This sets up $GLOBALS['egw']->accounts and $GLOBALS['egw']->db
@@ -30,6 +35,6 @@ while (false !== ($appdir = $egwdir->read())) {
 			$file = $defdir. '/'. $entry;
 			list( $filename, $extension) = explode('.',$entry);
 			if ( $extension != 'xml' ) continue;
-			bodefinitions::import( $file );			
+			bodefinitions::import( $file );
 		}
 }
diff --git a/importexport/setup/setup.inc.php b/importexport/setup/setup.inc.php
index 60820e5e24..9ef5325716 100644
--- a/importexport/setup/setup.inc.php
+++ b/importexport/setup/setup.inc.php
@@ -1,47 +1,50 @@
 <?php
-	/**
-	 * importexport
-	 *
-	 * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
-	 * @package importexport
-	 * @author Cornelius Weiss <nelius@cwtech.de>
-	 * @version $Id$
-	 */
+/**
+ * importexport
+ *
+ * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
+ * @package importexport
+ * @author Cornelius Weiss <nelius@cwtech.de>
+ * @version $Id$
+ */
 
-	$setup_info['importexport']['name']      = 'importexport';
-	$setup_info['importexport']['version']   = '1.4';
-	$setup_info['importexport']['app_order'] = 2;
-	$setup_info['importexport']['enable']    = 2;
-	$setup_info['importexport']['tables']    = array('egw_importexport_definitions');
-
-	$setup_info['importexport']['author'] =
-	$setup_info['importexport']['maintainer'] = array(
-		'name'  => 'Cornelius Weiss',
-		'email' => 'nelius@cwtech.de'
-	);
-	$setup_info['importexport']['license']  = 'GPL';
-	$setup_info['importexport']['description'] =
-	'';
-	$setup_info['importexport']['note'] =
-	'';
-
-	/* The hooks this app includes, needed for hooks registration */
-	//$setup_info['importexport']['hooks']['preferences'] = 'importexport'.'.admin_prefs_sidebox_hooks.all_hooks';
-	//$setup_info['importexport']['hooks']['settings'] = 'importexport'.'.admin_prefs_sidebox_hooks.settings';
-	$setup_info['importexport']['hooks']['admin'] = 'importexport'.'.importexport_admin_prefs_sidebox_hooks.all_hooks';
-	$setup_info['importexport']['hooks']['sidebox_menu'] = 'importexport'.'.importexport_admin_prefs_sidebox_hooks.all_hooks';
-	//$setup_info['importexport']['hooks']['search_link'] = 'importexport'.'.bomyterra.search_link';
-
-	/* Dependencies for this app to work */
-	$setup_info['importexport']['depends'][] = array(
-		 'appname' => 'phpgwapi',
-		 'versions' => Array('1.3','1.4','1.5','1.6','1.7')
-	);
-	$setup_info['importexport']['depends'][] = array(
-		 'appname' => 'etemplate',
-		 'versions' => Array('1.3','1.4','1.5','1.6','1.7')
-	);
+$setup_info['importexport']['name']      = 'importexport';
+$setup_info['importexport']['version']   = '1.4';
+$setup_info['importexport']['app_order'] = 2;
+$setup_info['importexport']['enable']    = 2;
+$setup_info['importexport']['tables']    = array('egw_importexport_definitions');
 
+$setup_info['importexport']['author'] = 'Cornelius Weiss';
+$setup_info['importexport']['maintainer'] = array(
+	'name'  => 'eGroupware core team',
+	'email' => 'egroupware-developers@lists.sf.net'
+);
+$setup_info['importexport']['license']  = 'GPL';
+$setup_info['importexport']['description'] =
+'';
+$setup_info['importexport']['note'] =
+'';
 
+/* The hooks this app includes, needed for hooks registration */
+//$setup_info['importexport']['hooks']['preferences'] = 'importexport'.'.admin_prefs_sidebox_hooks.all_hooks';
+//$setup_info['importexport']['hooks']['settings'] = 'importexport'.'.admin_prefs_sidebox_hooks.settings';
+$setup_info['importexport']['hooks']['admin'] = 'importexport'.'.importexport_admin_prefs_sidebox_hooks.all_hooks';
+$setup_info['importexport']['hooks']['sidebox_menu'] = 'importexport'.'.importexport_admin_prefs_sidebox_hooks.all_hooks';
+//$setup_info['importexport']['hooks']['search_link'] = 'importexport'.'.bomyterra.search_link';
 
+/* Dependencies for this app to work */
+$setup_info['importexport']['depends'][] = array(
+	 'appname' => 'phpgwapi',
+	 'versions' => Array('1.3','1.4','1.5','1.6','1.7')
+);
+$setup_info['importexport']['depends'][] = array(
+	 'appname' => 'etemplate',
+	 'versions' => Array('1.3','1.4','1.5','1.6','1.7')
+);
 
+// installation checks for importexport
+$setup_info['importexport']['check_install'] = array(
+	'dom' => array(
+		'func' => 'extension_check',
+	),
+);