Exporting data to 3.0.3 (rt2-to-rt3)

From
perl5.8.0 dumpfile-to-rt-3.0 rt2dump
I get
Importing users
u.u.u.u.u[Wed Jun 25 13:51:15 2003] [crit]: Wide character in subroutine
entry at /usr/lib/perl5/5.8.0/i386-linux-thread-multi/Enc
ode.pm line 154.
(/opt/rt3/lib/RT.pm:242)

What could be the cause of the problem?