Boot problems w/ new kernal and uda50

[The Deity]

[]      ***********  HELP  ************

	We have 3 brand new ra81 disc drives that were just installed
on our vax11/780 (4.2bsd) here at NCSU.  They were installed on uba0
and the new kernal compiles just fine, HOWEVER, when we attempt to boot
on it, we get the following messages:
-----------------------------------------------------------
>>>BOOT ANY

	CPU HALTED
	INIT SEQ DONE
	LOAD DONE, 00004C00 BYTES LOADED
Boot
: hp(0,0)vmunix.new
176460+62512+38416 start 0x11a4

	?INT-STK INVLD
	HALTED AT 8000CCCE

>>>
-----------------------------------------------------------
	This has caused us considerable problems, and we have been
unable to trace down the problem.  We have been told that the error
message is Interrupt-Stack Invalid.  The uda50 for the ra81's is on
the front end of uba0, and we also have a digital sound system
installed (if that makes any difference).  
	If you have ever seen or heard of anything like this please
write back quickly (and send a phone number), or call me at home 
(919) 872-0494 over the weekend (collect, if necessary).

	Any help would be appreciated.  As usual, thanks ahead of time.

	- jamie evans - decvax!mcnc!ncsu!jle - off: (919) 737-2336