Try changing your printer's font settings. For instance in Windows, try printing again but click 'Properties' in the print dialogue window, then try changing options which will affect font printing, such as 'Print fonts as graphics' or 'Print TrueType as graphics' (usually on the Font tab of the Properties dialogue window).
Please contact us on email@example.com
or call +44 (0)1284 725 725 (9am-5pm GMT, Monday-Friday) and we will be happy to reset the system to allow you to print again without having to purchase a second time. If you have a problem outside of our office hours and you need your music urgently, please purchase again and send us an email to explain what happened and we will cancel the initial order, so you don't get charged twice, as soon as we get back into the office.