[2005] Problem with olddb connection

[MechEng]

Greetings all,

I have run across an issue accessing an MS ACCESS database from my VB.Net app and would like some guidance on an appropriate course of action.

I have successfully tested my app on ~ 20 different PCs and have just run across one that hiccups with the following error:

System.Data.OleDb.OleDbException: No error message available, result code: REGDB_E_CLASSNOTREG

The application will run on the machine, but will not connect to the MS ACCESS database holding the data. This particular PC is running WinXP and has service pack 2 installed. I have checked and the machine operating system appears to be completely updated (according to MS)

Here are some of the application settings:
Application Type: Windows Application
Enable application Framework: True
Make single instance app: True
Authentication Mode: Windows
The application starts with a form.

This application is quite simple (well, complex for me ) requiring only the complied file and the .mdb file to run. Is there something in my setup that could be tweaked to eliminate (or try to) this problem for users who will install this program?

Any guidance provided is appreciated in advance.

[dynamic_sysop]

if only an odd pc hiccups, maybe it's worth checking that they have the correct version framework installed ( .net framework ) & that all the dll's etc... that your app requires to run are installed correctly within that framework / registered correctly.

[MechEng]

It looks like only the NET framework is required (please correct me if this is blatantly wrong) and we updated the PC to the most current version of the NET framework. I assume that upgrading to the MS WinXP service pack 2 would install correct JET OLEDB drivers (or is this even appropriate?). I am not sure where else to look.