10G Upgrade Issue

I have some old databases Oracl 8.1.7.4 32bit on a Sun Solaris Server. I am attempting to upgrade to 10.2.0.3 and am getting the following error.

DECLARE
*
ERROR at line 1:
ORA-00600: internal error code, arguments: [qctostiix1], [], [], [], [], [],
[], []
ORA-06512: at "SYS.UPGRADE_SYSTEM_TYPES_FROM_920", line 1
ORA-06512: at line 11
ORA-01403: no data found

drop procedure upgrade_system_types_from_920
*
ERROR at line 1:
ORA-00603: ORACLE server session terminated by fatal error

This seems to be a bug when upgrading from 32 bit to 64 bit. Oracle recommends applying two patches to Oracle Home, Patches 5871314 and 5892355.

I am still getting the error. It says that you might be able to avoid the issue if you migrate to Oracle 10.2.0.3 32 bit. Is that a seperate set of software I need to down load or an option when I run the migration using my current 10G home?

Thanks