hey, wondering if anyone knows how to fix this error, im using a 2d building mod for 1.7.3. i can temp fix by deleting the line but it comes back...thanks

Undefined offset: 902
File: /cache/templates/en^e3e7f44889c2c5f18d231e541b7cd9a57b622aa0.page.buildings2.default.tpl.php (Line 2024)

line 2021- 2026 :

<tr>
<td><?php echo $_smarty_tpl->tpl_vars['LNG']->value['tech'][$_smarty_tpl->tpl_vars['ResType']->value];?>
</td>
<td><span style='color:<?php if ($_smarty_tpl->tpl_vars['Element']->value['destroyOverflow'][$_smarty_tpl->tpl_vars['RessID']->value] == 0) {?>lime<?php } else { ?>red<?php }?>'><?php echo pretty_number($_smarty_tpl->tpl_vars['ResCount']->value);?>
</span></td>
</tr>

anyone????