diff -u -r dotproject/classes/date.class.php dotproject-patched/classes/date.class.php
--- dotproject/classes/date.class.php	2011-03-10 06:11:25.000000000 +0100
+++ dotproject-patched/classes/date.class.php	2013-01-03 12:35:36.598020904 +0100
@@ -8,7 +8,8 @@
 }
 
 
-require_once $AppUI->getLibraryClass('PEAR/Date');
+#require_once $AppUI->getLibraryClass('PEAR/Date');
+require_once 'Date.php';
 
 define('FMT_DATEISO', '%Y%m%dT%H%M%S');
 define('FMT_DATELDAP', '%Y%m%d%H%M%SZ');
diff -u -r dotproject/modules/calendar/calendar.class.php dotproject-patched/modules/calendar/calendar.class.php
--- dotproject/modules/calendar/calendar.class.php	2012-06-19 11:05:19.000000000 +0200
+++ dotproject-patched/modules/calendar/calendar.class.php	2013-01-03 12:36:10.898019883 +0100
@@ -7,7 +7,8 @@
 ## Calendar classes
 ##
 
-require_once ($AppUI->getLibraryClass('PEAR/Date'));
+#require_once ($AppUI->getLibraryClass('PEAR/Date'));
+require_once 'Date.php';
 require_once ($AppUI->getSystemClass ('dp'));
 require_once $AppUI->getSystemClass('libmail');
 require_once $AppUI->getSystemClass('date');
diff -u -r dotproject/modules/projects/projects.class.php dotproject-patched/modules/projects/projects.class.php
--- dotproject/modules/projects/projects.class.php	2011-06-20 13:07:49.000000000 +0200
+++ dotproject-patched/modules/projects/projects.class.php	2013-01-03 12:36:12.709019829 +0100
@@ -10,7 +10,8 @@
 */
 
 require_once ($AppUI->getSystemClass ('dp'));
-require_once ($AppUI->getLibraryClass('PEAR/Date'));
+#require_once ($AppUI->getLibraryClass('PEAR/Date'));
+require_once 'Date.php';
 require_once ($AppUI->getModuleClass('tasks'));
 require_once ($AppUI->getModuleClass('companies'));
 require_once ($AppUI->getModuleClass('departments'));