Great Problem with PEAR::QuickForm Group elements.

Hello, I have a strange Problem with Quickform Groups. On my Windows dev mashine, everything works fine. But on different Server (Linux) it does the following errors. First of all my code :-) $form->addElement('header','myHeader','Sponsor anlegen',$classhead); $form->addElement('hidden','id',$id); $c1=array("class"=>"form","size"=>"9"); $plzort[0] = &HTML_QuickForm::createElement('text', 'plz', 'a1', $c1); $c2=array("class"=>"form","size"=>"30"); $plzort[1] = &HTML_QuickForm::createElement('text', 'ort', 'a2', $c2); $form->addGroup($plzort, 'plzort', 'PLZ / Ort'); if($form->validate()) {processing} $form->display(); When I start the Form, everything is displayed fine, but after sending I get the following error: Fatal error: Call to a member function on a non-object in / HTML/QuickForm/group.php on line 386 I cant identify why. Especially, because it works with windows, but not on different Linux servers (I have no possibility to admin this servers). Here some output of var_dump($plzort); before I add the group. //First start array(2) { [0]=> &object(html_quickform_text)(9) { ["_attributes"]=> array(4) { ["class"]=> string(4) "form" ["size"]=> string(1) "9" ["name"]=> string(3) "plz" ["type"]=> string(4) "text" } ["_tabOffset"]=> int(0) ["_tab"]=> string(1) " " ["_lineEnd"]=> string(1) " " ["_comment"]=> string(0) "" ["_label"]=> string(2) "a1" ["_type"]=> string(4) "text" ["_flagFrozen"]=> bool(false) ["_persistantFreeze"]=> bool(true) } [1]=> &object(html_quickform_text)(9) { ["_attributes"]=> array(4) { ["class"]=> string(4) "form" ["size"]=> string(2) "30" ["name"]=> string(3) "ort" ["type"]=> string(4) "text" } ["_tabOffset"]=> int(0) ["_tab"]=> string(1) " " ["_lineEnd"]=> string(1) " " ["_comment"]=> string(0) "" ["_label"]=> string(2) "a2" ["_type"]=> string(4) "text" ["_flagFrozen"]=> bool(false) ["_persistantFreeze"]=> bool(true) } } //After sending array(4) { ["plz"]=> string(5) "76227" ["ort"]=> string(9) "Karlsruhe" [0]=> &object(html_quickform_text)(9) { ["_attributes"]=> array(4) { ["class"]=> string(4) "form" ["size"]=> string(1) "9" ["name"]=> string(3) "plz" ["type"]=> string(4) "text" } ["_tabOffset"]=> int(0) ["_tab"]=> string(1) " " ["_lineEnd"]=> string(1) " " ["_comment"]=> string(0) "" ["_label"]=> string(2) "a1" ["_type"]=> string(4) "text" ["_flagFrozen"]=> bool(false) ["_persistantFreeze"]=> bool(true) } [1]=> &object(html_quickform_text)(9) { ["_attributes"]=> array(4) { ["class"]=> string(4) "form" ["size"]=> string(2) "30" ["name"]=> string(3) "ort" ["type"]=> string(4) "text" } ["_tabOffset"]=> int(0) ["_tab"]=> string(1) " " ["_lineEnd"]=> string(1) " " ["_comment"]=> string(0) "" ["_label"]=> string(2) "a2" ["_type"]=> string(4) "text" ["_flagFrozen"]=> bool(false) ["_persistantFreeze"]=> bool(true) } } I am using the latest PEAR packages on different PHP versions. PEAR is never installed on the servers, I include it by myself! Please help me out. Thank you very much Mirco Blitz