This error comes up pretty often when a client first starts using the Quickbooks Desktop integration. It is caused when the Quickbooks company file is moved from the computer where it was created. This can happen if you created your company on a desktop machine and now use it on a server or if you simply bought a new computer.
The instructions below are on Intuit’s website and while we at SYNCrew have followed them with success, we do not guarantee this since it is based on another company’s product. We also strongly recommend backing up your company file before starting this.