I'll provide additional details on how to resolve script errors, seasidefuel.
Since you already performed some troubleshooting steps, let's make sure you're using IE 11, 10, and 9. These are the browser versions supported by QuickBooks Desktop 2016.
Script errors occur when there is a problem executing a command that involves our application(s) on your computer attempting to access a web-based (internet) feature. This may also involve third party applications (e.g. Java, Flash, ActiveX, etc.) interacting with our online applications (e.g. Online Service Center, QuickBooks Online, etc.) and/or our desktop software (e.g. QuickBooks Pro/Premier/ Enterprise or Point of Sale, etc.).
I recommend consulting an IT expert for further assistance to help you with your issue.
Please know that you're always welcome to post if you have any other concerns. Wishing you and your business continued success.