PM 9500MP180 boot error

[David Ulrich]

Hi,

I install YDL 2.1 on my PowerMac 9500MP 180 64MRam and IMS TT3Di. I use 
bootx 1.2.3 with vmlinux. I can't install the YDL 2.3, I don't know why.
  After the install, I can't boot on the YDL. It does:

Caused by (from srr1=41030) Transfer error ack signal

just after

Welcome to Yellow Dog Linux
Press 'I' to enter interactive startup

  "Machine Check in Kernel Mode"...

I try many insatlls, but all does that.

David