The links in the installation are not in the right format to install it on v2.3.1.
This is the Problem:
iv) EDIT catalog/admin/orders.php
FIND (around line 321):
<tr>
<td colspan="2" align="right"><?php echo '<a href="' . tep_href_link(FILENAME_ORDERS_INVOICE, 'oID=' . $HTTP_GET_VARS['oID']) . '" TARGET="_blank">' . tep_image_button('button_invoice.gif', IMAGE_ORDERS_INVOICE) . '</a> <a href="' . tep_href_link(FILENAME_ORDERS_PACKINGSLIP, 'oID=' . $HTTP_GET_VARS['oID']) . '" TARGET="_blank">' . tep_image_button('button_packingslip.gif', IMAGE_ORDERS_PACKINGSLIP) . '</a> <a href="' . tep_href_link(FILENAME_ORDERS, tep_get_all_get_params(array('action'))) . '">' . tep_image_button('button_back.gif', IMAGE_BACK) . '</a>'; ?></td>
</tr>
REPLACE WITH:
<tr>
<td colspan="2" align="right"><?php echo '<a href="' . tep_href_link(FILENAME_ORDERS_INVOICE, 'oID=' . $HTTP_GET_VARS['oID']) . '" TARGET="_blank">' . tep_image_button('button_invoice.gif', IMAGE_ORDERS_INVOICE) . '</a> <a href="' . tep_href_link('../pdfinvoice.php', 'order_id=' . $HTTP_GET_VARS['oID'] . '&passthruID=' . $pass_phrase_hash, 'SSL') . '" TARGET="_blank">' . tep_image_button('button_invoice_pdf.gif', IMAGE_ORDERS_PDF_INVOICE) . '</a> <a href="' . tep_href_link(FILENAME_ORDERS_PACKINGSLIP, 'oID=' . $HTTP_GET_VARS['oID']) . '" TARGET="_blank">' . tep_image_button('button_packingslip.gif', IMAGE_ORDERS_PACKINGSLIP) . '</a> <a href="' . tep_href_link(FILENAME_ORDERS, tep_get_all_get_params(array('action'))) . '">' . tep_image_button('button_back.gif', IMAGE_BACK) . '</a>'; ?></td>
</tr>
FIND (around line 412):
$contents[] = array('align' => 'center', 'text' => '<a href="' . tep_href_link(FILENAME_ORDERS_INVOICE, 'oID=' . $oInfo->orders_id) . '" TARGET="_blank">' . tep_image_button('button_invoice.gif', IMAGE_ORDERS_INVOICE) . '</a> <a href="' . tep_href_link(FILENAME_ORDERS_PACKINGSLIP, 'oID=' . $oInfo->orders_id) . '" TARGET="_blank">' . tep_image_button('button_packingslip.gif', IMAGE_ORDERS_PACKINGSLIP) . '</a>');
REPLACE WITH:
$contents[] = array('align' => 'center', 'text' => '<a href="' . tep_href_link(FILENAME_ORDERS_INVOICE, 'oID=' . $oInfo->orders_id) . '" TARGET="_blank">' . tep_image_button('button_invoice.gif', IMAGE_ORDERS_INVOICE) . '</a> <a href="' . tep_href_link('../pdfinvoice.php', 'order_id=' . $oInfo->orders_id . '&passthruID=' . $pass_phrase_hash, 'SSL') . '" TARGET="_blank">' . tep_image_button('button_invoice_pdf.gif', IMAGE_ORDERS_PDF_INVOICE) . '</a> <a href="' . tep_href_link(FILENAME_ORDERS_PACKINGSLIP, 'oID=' . $oInfo->orders_id) . '" TARGET="_blank">' . tep_image_button('button_packingslip.gif', IMAGE_ORDERS_PACKINGSLIP) . '</a>');
in 2.3.1 it looks lik this
$contents[] = array('align' => 'center', 'text' => tep_draw_button(IMAGE_EDIT, 'document', tep_href_link(FILENAME_ORDERS, tep_get_all_get_params(array('oID', 'action')) . 'oID=' . $oInfo->orders_id . '&action=edit')) . tep_draw_button(IMAGE_DELETE, 'trash', tep_href_link(FILENAME_ORDERS, tep_get_all_get_params(array('oID', 'action')) . 'oID=' . $oInfo->orders_id . '&action=delete')));
$contents[] = array('align' => 'center', 'text' => tep_draw_button(IMAGE_ORDERS_INVOICE, 'document', tep_href_link(FILENAME_ORDERS_INVOICE, 'oID=' . $oInfo->orders_id), null, array('newwindow' => true)) . tep_draw_button(IMAGE_ORDERS_PACKINGSLIP, 'document', tep_href_link(FILENAME_ORDERS_PACKINGSLIP, 'oID=' . $oInfo->orders_id), null, array('newwindow' => true)));
$contents[] = array('text' => '<br />' . TEXT_DATE_ORDER_CREATED . ' ' . tep_date_short($oInfo->date_purchased));
if (tep_not_null($oInfo->last_modified)) $contents[] = array('text' => TEXT_DATE_ORDER_LAST_MODIFIED . ' ' . tep_date_short($oInfo->last_modified));
$contents[] = array('text' => '<br />' . TEXT_INFO_PAYMENT_METHOD . ' ' . $oInfo->payment_method);
or this.
<td class="pageHeading"><?php echo HEADING_TITLE; ?></td>
<td class="pageHeading" align="right"><?php echo tep_draw_separator('pixel_trans.gif', 1, HEADING_IMAGE_HEIGHT); ?></td>
<td class="smallText" align="right"><?php echo tep_draw_button(IMAGE_ORDERS_INVOICE, 'document', tep_href_link(FILENAME_ORDERS_INVOICE, 'oID=' . $HTTP_GET_VARS['oID']), null, array('newwindow' => true)) . tep_draw_button(IMAGE_ORDERS_PACKINGSLIP, 'document', tep_href_link(FILENAME_ORDERS_PACKINGSLIP, 'oID=' . $HTTP_GET_VARS['oID']), null, array('newwindow' => true)) . tep_draw_button(IMAGE_BACK, 'triangle-1-w', tep_href_link(FILENAME_ORDERS, tep_get_all_get_params(array('action')))); ?></td>
I don't know exactly whats the right lines.
Is some one able to convert this links?
greetings
farenhide