Multi images extra by nico

[michael_s]

There is a bug in the contribution that shows error when adding items with no extra images.

When adding
==================================
unset($sql_data_array);
for($nb=1; $nb $products_id);
$sql_data_array = array_merge($sql_data_array, $insert_sql_data);
=========================================
in admin/categories.php as part of the installation, replace the end part:

$sql_data_array = array_merge($sql_data_array, $insert_sql_data);

with:

if(isset($sql_data_array)) $sql_data_array = array_merge($sql_data_array, $insert_sql_data);


I hope that helps!

Nick

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