Actually when I went to the IS web site, I found some KB articles there about the problem. The problem apparently is a Windows Installer problem and it can be tedious to troubleshoot if some registry entries are misconfigured.

>Hi Mark,
>
>Have you checked to see if the client machine/user has read write access to the drive?
>
>Ric
>
>>I'm getting an error 1327 (invalid drive h:\) with installshield lite. I've installed this app on about 200 other machines and have never seen this error before. As far as I can tell, there is no problem with drive h:. Even when the drive is unmapped, the error happens. Suggestions much appreciated! Thanks.