The QBsync must be updated in order to use.
QBsync Update:
The QBsync must be updated in order to use. Please download and install the sync from the following URL:
http://texas.cvltracker.com/download/QBSyncV4.0.3-24-02-09.zip
If you have a custom sync developed for your company this sync will NOT work. Please contact your cvlSoft representative for an updated custom sync.