Posting in the Magento forums has been disabled pending the implementation of a new and improved forum solution which should better serve the community.
For new questions please post at magento.stackexchange.com, the community-run support site for the Magento community. We will be providing updates on the new forum solution soon. For questions or concerns please email firstname.lastname@example.org.
after clicking on HOLD while viewing the order (which by the way is in “Processing” Status) I receive “Error 500 - Internal server error. After going back to the list of orders I see that the status of Order in question changes to Processing, but the Order itself becomes inaccessible.
I’m running Magento ver. 0.7.15480 on 1and1 server.
Go to System -> Cache Control -> check Refress All Cache -> Save cache settings
Go back in Sales -> Orders -> click on order and the page (/magento1/index.php/admin/sales_order/view/order_id/1/) is shown.