I've found what I'm looking for in MarketPress and am extremely thankful for its existence. I've been happily translating the plugin with great success, and am nearly ready to go live with my shop.
That being said, one little problem remains that I am unable to solve.
Specifically, one of the "Email Notifications" messages remains untranslated in parts.
While my "New Order" message uses my translated strings for ORDERINFO and SHIPPINGINFO correctly, the "Order Shipped" message nevertheless reverts back to the English versions, namely for the words "Items:", "Order Total:" and the shipping address details ("Full Name:", "Address:" et cetera).
What could possibly cause this problem?