a few things to try...
make sure the squirrel is in properly (some need a lot of force to locate properly)
make sure you turn on the cdrom berfore the miggy
check the dosdriver has the correct device and unit set (look in the icon tooltypes as well as they override the script)
you could try removing your fast ram, some ram boards / accelarators arn't compatible (but I think that was only if 8 mb was installed)
make sure you have no other 'drivers' for any pcmcia cards you might have had still lurking on the system...