kernel panic - SCSI

[Leonard, Phil]

	Just installed gentoo stage3 on an IBM Netfinity 4000R and I'm getting the following kernel 
panic when I try to boot.  This is my first attempt at installing gentoo.  What have I done wrong?
	 
	Partition check:
	 /dev/scsi/host0/bus0/target0/lun0: p1 p2 p3
	---- Detected aic7xxx hardware
	---- Scanning for aic7xxx_old...PCI: Enabling device 02:0f.0 (0116 -> 0117)
	(scsi1) <Adaptec AHA-294X Ultra SCSI host adapter> found at PCI 2/15/0
	(scsi1) Wide Channel, SCSI ID=7, 16/255 SCBs
	(scsi1) Cables present (Int-50 NO, Int-68 YES, Ext-68 NO)
	(scsi1) Dounloading sequencer code... 436 instructions downloaded
	scsi1 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.2.4/5.2.0
	        <Adaptec AHA-294X Ultra SCSI host adapter>
	scsi0: Spurious SCSI interrupt
	scsi0: Spurious SCSI interrupt
	scsi0: Spurious SCSI interrupt
	scsi0:A:10:255 Attempt to issue message failed
	Kernel panic: HOST_MSG_LOOP with invalid SCB 0
	 
	In interrupt handler - not syncing
	 
	 
	Thanks, Philip