Overview

While opening QuickBooks and SmartVault, you get the following error:

Could not read association information from QuickBooks. : qbXML components have not been installed. Exception: System.Runtime.InteropServices.COMException (0x80040405): qbXML components have not been installed.
at QBFC7Lib.QBSessionManagerClass.DoRequests(IMsgSetRequest request)....

This error happens when QuickBooks files needed to communicate with SmartVault are either not installed or damaged.

Solution 1: Fix the QuickBooks dlls  

Run reboot.bat from the QuickBooks programs folder. This is an Intuit utility that will register all of the QuickBooks dlls on the Windows system.

Solution 2: Do a QuickBooks Repair

1. Open the Control Panel on your computer.
2. Select Add or Remove Programs or Uninstall a Program.
3. Select the QuickBooks program
4. Click Change/Remove or Uninstall/Change.  
5. Select Repair when prompted.

Solution 3: Refer to the Intuit Support Website

Please refer to the solution provided by Intuit Support on their website:
Error: QBXML components not installed, during a financial exchange