Fatal error: Unsupported operand types in /public_html/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php on line 657
Goto app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
Find,
$dataRow += $stockItemRows[$productId];
Replace with,
$dataRow = array_merge($dataRow,$stockItemRows[$productId]);
Hope this helps anyone…
Bijal Bhavsar 🙂