DDD 3.3.1 (powerpc-apple-darwin5.3) gets `Signal 10' signal

[tom wible]

Warning: No type converter registered for 'String' to
'Orientation' conversion.
Warning: No type converter registered for 'String' to
'Orientation' conversion.
Warning: No type converter registered for 'String' to
'Orientation' conversion.
Error: attempt to add non-widget child "DropSiteManager" to parent
"ddd" which supports only widgets

Xt error (attempt to add non-widget child "DropSiteManager" to
parent "ddd" which supports only widgets).

Oops!  You have found a bug in DDD.

cat ~/.ddd/log

GNU DDD 3.3.1 (powerpc-apple-darwin5.3)
Copyright (C) 1995-1999 Technische Universität Braunschweig,
Germany.
Copyright (C) 1999-2001 Universität Passau, Germany.

Compiled with GCC 2.95.2 19991024 (release), libstdc++ 2.8.0
Requires X11R6, Xt11R6, Motif 2.1 (GNU/LessTif Version 2.1 Release
0.93.18)
Includes XPM 3.4.11, Athena Panner, DDD core
Built 2002-02-26 by System Administrator
<root@tigger.rva.trw.com>.
$  ddd/ddd
!  Signal 10