Hello there, @atallman.
Thanks for reaching out to us. I’m here to make sure you’re able to open the company file without any issues.
The error 6155 indicates that there is an issue with the company file or the QuickBooks Desktop application is facing difficulties accessing the company file.
Here are some of the possible reasons why QuickBooks encounters this error:
To fix the problem, let’s start by updating the program to the latest release.
If you continue to get the same result after performing these steps, run the QuickBooks File Doctor to fix the damaged company file. Let me show you how:
Check out this article for reference: QuickBooks File Doctor – Fix your Damaged Company file or Network.
That should get you back up and running. Let me know if this works out for you, I’m more than happy to help. Take care!