Hello there, Fraser77.
The error you're facing is likely due to printer setup issues or conflicts with QuickBooks Desktop.
To begin, let's ensure your printer is powered on and securely connected to your computer. You can test its functionality by printing a document from another application to rule out general printer problems.
If the issue persists after checking your printer setup, close QuickBooks and download the latest version of the QuickBooks Tool Hub, which provides tools to resolve common errors. For detailed instructions on how to download, install, and troubleshoot, refer to this article: Fix printing issues in QuickBooks Desktop.
You can revisit this thread if you have follow-up questions.