We have a Magento installation CE [url removed, login to view] (site still in development) and recently an error has started occuring when a user clicks on an invoice/order/shipment note after checkout or in their account an error page comes (similarly for admin from admin panel).
We'd like a programmer to fix this issue so invoices and order notes can be viewed and printed.
Feel free to ask me any questions if you need more information. Ideally we don't want to do a whole site reinstall as we've done some questions coding and have already optimised the site to our needs.
**Please see attached file for error and screenshots.