Magento error when trying to duplication product - magento-1.7

Question

I am using magento 1.7. i have got issue i don't know why this is happen. i just open product in backend for edit then click on duplicate then i got following error
Warning: Illegal string offset 'new_file' in D:\wamp\www\easyshop\app\code\core\Mage\Catalog\Model\Product\Attribute\Backend\Media.php on line 158
when i try following code to debug file:
print_r($newImages);
die;
then i got this following data
Array
(
[/s/a/samsung_galaxy_s2_front1.jpg] => /s/a/samsung_galaxy_s2_front1_4.jpg
[/s/g/sgs2p1.jpg] => /s/g/sgs2p1_4.jpg
[/s/g/sgs2_11.jpg] => /s/g/sgs2_11_4.jpg
[/s/g/sgs2-4386.jpg] => /s/g/sgs2-4386_4.jpg
)
I thing array keys are wrong can you please give solution to solve this problem

Answer 1

I had the same problem on 1.7.02. The solution I found was to change Magento's (IMHO) bugged code.
On Mage_Catalog_Model_Product_Attribute_Backend_Media i've changed the lines where you find:
// For duplicating we need copy original images.
$duplicate = array();
foreach ($value['images'] as &$image) {
if (!isset($image['value_id'])) {
continue;
}
$duplicate[$image['value_id']] = $this->_copyImage($image['file']);
$newImages[$image['file']] = $duplicate[$image['value_id']];
}
for:
// For duplicating we need copy original images.
$duplicate = array();
foreach ($value['images'] as &$image) {
if (!isset($image['value_id'])) {
continue;
}
$duplicate[$image['value_id']] = $this->_copyImage($image['file']);
$newImages[$image['file']] = array();
$newImages[$image['file']]['new_file'] = $duplicate[$image['value_id']];
$newImages[$image['file']]['label'] = $image['label'];
}
It did the trick for me... Images are now being properly duplicated and enabled on new product.