Article ID: 82525
When installing a driver from the list below, the UNIDRV.HLP file may fail to copy if the Microsoft Windows operating system version 3.1 is being installed for the first time on a computer with no previous installation of Windows present:
CANON330 CIT24US CIT9US DICONIX EXECJET TOSHIBA PS1 TI850
An easy workaround to this problem is to install the Hewlett-Packard (HP) LaserJet Series II first, which will copy the UNIDRV.HLP file. Then, install the desired printer driver.
Microsoft is researching this problem and will post new information here as it becomes available.