Printer driver is unknown - error code 1797

[ibelton]

When trying to install 3 iPrint printers I get the following message:

Error message: The printer driver is unknown
Error group: Windows
Error code 1797

The workstation is Windows Vista fully patched.

The server is nw65sp7

Most printers are installing okay - just 3 that use the following drivers:

HP laserjet P2015
HP laserjet P3005
HP colour laserjet 2605

The Vista workstation is a fresh clean installation.

There is a TID on this issue - 7000698

I have discovered that manually installing the driver on the workstaion first (via contriol panel/server properties/add driver), and then trying to install the printer again resolves the 'printer driver is unknown' error.

Anyone got a solution please???

Regards
IanB