Merchants using the Quickbooks Web Connector plugin are getting “QBWC1039: There was a problem adding the application.” upon opening up the QWC file.
The user running the web connector doesn’t have access to the company file
If you are using 3dcart’s Quickbooks Web Connector plugin, you must also have full access rights to the Company file that Quickbooks is using.
In some cases a user may be accessing the company file through a network rather than on their specific computer/work station, so access rights might not be granted.
To correct this, ask your network’s administrator to grant you rights to the file.