Have you tried using a private browser, alchemy1?
It will not store the cache and cookies which can cause the error in the long run. Here are the shortcut keys:
- Command + Shift + N (Safari)
- Ctrl + Shift + N (Google Chrome)
- Ctrl + Shift + P (Mozilla Firefox)
Log in to your QBO account and trying to create a transaction for this customer. If it works, clear the cache in your regular browser. Here's an article that includes the steps on each browser: How do I clear my browser cache and temporary Internet files?. You can also try using a different browser.
I also recommend contacting our QuickBooks support, so the error will be reported.
- Go to Help and select Contact us.
- Enter the exact error message in the question field, then click Let's talk.
- Choose either Start a message or Get a callback.
I'll be right here if you need anything else.
