Hi,
Please edit the file "administrator/components/com_hikashop/controllers/upload.php" and replace
if($type == 'image') {
$img = $helperImage->getThumbnail($file->file_path, array(100, 100), array('default' => true));
By
if($type == 'image') {
if(!empty($options['processing']) && $options['processing'] == 'resize')
$helperImage->resizeImage($file->file_path);
$img = $helperImage->getThumbnail($file->file_path, array(100, 100), array('default' => true));
Two times in the file (but the most important is the second one, for the "upload" function).
We will update the HikaShop 2.5.0 (and not 4.5.0) package as soon as possible with the fix.
Regards,