Hello,

I found an error which happens when adding a new bill line in v9.1.2. I don't know if it has been fixed yet.In tool/saveBillLine.php, on line 167, 174 and 181, strpos checks if $catalogSpecification is in $bill/$quot/$order->comment. However, sometimes $catalogSpecification is an empty string and this throws the following error:

** ERROR ** [V9.1.2] ERROR **
** ERROR ** [V9.1.2] on file '/var/www/html/projeqtor/tool/saveBillLine.php' at line (174)
** ERROR ***** [V9.1.2] cause = strpos(): Empty needle

A fix could be to first check if $catalogSpecification is empty.
For example, lines 136 to 142 could be changed from

$catalogSpecification = "";
$boolCatalog = false;
if (array_key_exists('billLineIdCatalog',$_REQUEST) and $_REQUEST['billLineIdCatalog']) {
  $boolCatalog = true;
  $catalog=new Catalog($_REQUEST['billLineIdCatalog']);
  $catalogSpecification = ($catalog->specification)?$catalog->specification:"";
}

to

$catalogSpecification = "";
$boolCatalog = false;
if (array_key_exists('billLineIdCatalog',$_REQUEST) and $_REQUEST['billLineIdCatalog']) {
  $catalog=new Catalog($_REQUEST['billLineIdCatalog']);
  if ($catalog->specification) {
    $boolCatalog = true;
    $catalogSpecification = $catalog->specification;
  }
}