Symptoms:
While transferring time from Web TimeSheet to QuickBooks with timesheet Comments mapped to QuickBooks Notes, you may get the following error message,

"Unhandled exception has occurred in your application. If you click on continue the application will ignore this error and attempt to continue. If you click quit the application will close immediately"

Cause:
There is a User Defined Field created by the name Comments on the timesheet.

Resolution:
QuickBooks Integration Manager does not handle user defined fields, hence as a workaround, ensure that the User Defined Field names do not match the names of default fields in Web TimeSheet.