Import-1.0-to-2.0 stuck

RT Users
1

I’m trying to upgrade RT 1.0.6 (!) RT to 2.0.15, on a Debian GNU/Linux
host. Installed RT2 OK so far, even to the point of logging in as root.
Now I’ve doing “perl ./import-1.0-to-2.0” in the rt1/etc directory:

perl ./import-1.0-to-2.0
Use of uninitialized value in concatenation (.) or string at
/usr/local/rt2/lib//RT/Handle.pm line 25.
Use of uninitialized value in concatenation (.) or string at
/usr/local/rt2/lib//RT/Handle.pm line 25.
Can’t locate object method “new” via package “RT::Handle” at
/usr/local/rt2/lib//RT.pm line 26.

That double slash looks slightly odd, but not obviously wrong. Any ideas?