User is getting an error when trying to access QuickBooks integration features in BillQuick:
"QuickBooks can't start because it is already running. Only QuickBooks Accountant and QuickBooks Enterprise can open more than one company file."
To resolve this error:
1. Close both QuickBooks and BillQuick applications.
2. Open your Task Manager by going to the Start menu and typing Task Manager.
3. Move to the Processes tab and end all processes that deal with QuickBooks.
4. Open QuickBooks and then BillQuick.
You should be able to work with it now.