Strange problem while importing to rt3

hello there,

i have tried to upgrade from rt2.0.15 to rt3

the export just was working fine. - but while importing

“perl dumpfile-to-rt-3.0 rt2-export” following error appeard:

Importing groups
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr[Sun Jun
15 20:33:14 2003] [crit]: 1 (/var/rt3/lib/RT/
[Sun Jun 15 20:33:14 2003] [crit]: Can’t load a principal for id
rrrrrrrrq[Sun Jun 15 20:33:15 2003] [crit]: Can’t locate object method
"fetchall_arrayref" via package “Class::ReturnValue” at
/var/rt3/lib/RT/ line 271.

any idea?