The answer is to use the -m for the install script, so type in:
Taken from Borland web site:
The Error -10 is a generic install error. The usual cause of this is due to a previous version of Kylix that wasn't uninstalled completely. Check the RPM database to see if there are still components from Kylix installed, use the command rpm -qa | grep kylix to check for installed packages. If there are any packages still on the system, use rpm -e < PACKAGE> to remove them. This can also be caused by a bug in the RPM manager that causes it to incorrectly check package dependancies. If this is the cause, then you can use the -m switch on the installer.