When I click the Ship button, I get this error in the lower right corner, where there should be a button:
Fatal error: Call to a member function isShippingLabelsAvailable() on a non-object in /var/www/limp/app/code/core/Mage/Adminhtml/Block/Sales/Order/Shipment/Create/Items.php on line 132
Here i got solution for it just replace text shown in below.
change line 1214 of app/code/core/Mage/Sales/Model/Order.php from
$shippingMethod = parent::getShippingMethod();
$shippingMethod = $this->getData('shipping_method');
I hope this work for you.