Hello there, @seej.

I can see how challenging it is for you. But I'm here to ensure that you'll be able to delete the transaction and get you back to working order.

Before we proceed, have you perform the troubleshooting steps provided by my colleagues above? If you haven't yet, I recommend doing it so.

If it still doesn't work, let's perform other troubleshooting steps so you can delete the transaction successfully. To get started, let's perform a mini repair on your QuickBooks by using the QuickBooks Refresher Tool. Here's how: 

Let's use the QuickBooks Install Diagnostic Tool to fix the issue. 

1. Download the QuickBooks Install DiagnosticTool.
2. When prompted, save the file to the local Desktop.
3. Close any open programs and run the QBInstall Tool.
4. Restart your computer after running the tool.

For more troubleshooting steps, please check out this article for your reference: Solutions for when QuickBooks Stops Working.

If all the troubleshooting steps don't work, I suggest contacting our Technical Support Team. They have the tools to further investigate this matter and get this fix for you. 

To reach them:   

1. Go to the Help menu.
2. Select QuickBooks Desktop Help.
3. In the Have a Question window, click Contact us at the bottom portion of the screen.
4. Click Search for something else.
5. Type in a keyword about your concern.
6. Hit Search.
7. Click on Start a Message.

You can check out this article for your reference: Contact the QuickBooks Desktop Customer Support Team. 

You can also visit QuickBooks Community in case you need some tips and related articles in the future. 

Please let me know if you have other QuickBooks concerns. I'll be around if you need any help.