The System Software 5.0 Installer works only with System files that are
exact copies of the System file included on the Installer disk.
When you use the Installer to install the System folder onto a disk, only
the files and resources necessary for the Macintosh system you are
installing for are copied to that disk. There are more resources in the
System file on the Installer disk than the System file it installs on
another disk. The error
error -192, Can't find Scrapbook file for Macintosh xx Installer
is generated when the Installer tries to find a particular resource (the
Scrapbook in this example) that is not present in the "installed" System
file.
The only workaround is to "drag copy" the System file from the Installer
disk to your hard disk. The Installer should then function correctly.