This is a known technical problem with Microsoft Access Driver 2010. Microsoft’s latest 2010 Access Database Engine does not run consistently with .Net Applications with which our software is developed. We are not alone – other providers of .Net solutions are facing the same highly frustrating issue. For further information, click this forum linkThis problem has been reported to Microsoft and we are awaiting their response to resolve this.To fix this issue please click this link to download and install the Access Database Engine 2007.