Here's the solution to eliminate 1054 error in inserting new multilanguage ezpages.

In .../CUSTOM_ADMIN/ezpages.php you have to modify following block:

PHP Code:
$sql_data_array = array('pages_title' => $pages_title,
                                  
'page_open_new_window' => $page_open_new_window,
                                  
'page_is_ssl' => $page_is_ssl,
                                  
'alt_url' => $alt_url,
                                  
'alt_url_external' => $alt_url_external,
                                  
'status_header' => $status_header,
                                  
'status_sidebox' => $status_sidebox,
                                  
'status_footer' => $status_footer,
                                  
'status_toc' => $status_toc,
                                  
'header_sort_order' => $pages_header_sort_order,
                                  
'sidebox_sort_order' => $pages_sidebox_sort_order,
                                  
'footer_sort_order' => $pages_footer_sort_order,
                                  
'toc_sort_order' => $pages_toc_sort_order,
                                  
'toc_chapter' => $toc_chapter,
                                  
'pages_html_text' => $pages_html_text); 
to:

PHP Code:
$sql_data_array = array('page_open_new_window' => $page_open_new_window,
                                  
'page_is_ssl' => $page_is_ssl,
                                  
'alt_url' => $alt_url,
                                  
'alt_url_external' => $alt_url_external,
                                  
'status_header' => $status_header,
                                  
'status_sidebox' => $status_sidebox,
                                  
'status_footer' => $status_footer,
                                  
'status_toc' => $status_toc,
                                  
'header_sort_order' => $pages_header_sort_order,
                                  
'sidebox_sort_order' => $pages_sidebox_sort_order,
                                  
'footer_sort_order' => $pages_footer_sort_order,
                                  
'toc_sort_order' => $pages_toc_sort_order,
                                  
'toc_chapter' => $toc_chapter);