Thanks a lot Mike :-) The default tool is set to "Installer", so I don't think the problem is here.
I'll try to download the newer version of the Installer tomorrow. Hopefully that will fix it! :-)
Like Mike says, change it to "
C:Installer" (without quotes).
Not sure why C: isn't in your command path but that's another question entirely. More likely is that the Installer command isn't in C: to begin with.
Incidentally, the installer command doesn't get copied over to the hard drive when you install Workbench. This can be done manually by locating the file on the Install3.1 disk and copying it over to C:.
Using that new version though that Mike suggests is a good idea because there's a lot of install scripts that don't work with the old version of the installer command anymore.