tclsh8.5 crashed with SIGSEGV in Itcl_CreateMemberFunc()

[dfc]

Binary package hint: tcl8.5

i tried to start the msort-gui and tcl crashed

ProblemType: Crash
Architecture: amd64
Dependencies:
 libgcc1 1:4.3.2-1ubuntu10
 gcc-4.3-base 4.3.2-1ubuntu10
 findutils 4.4.0-2ubuntu3
 libc6 2.8~20080505-0ubuntu7
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/tclsh8.5
NonfreeKernelModules: nvidia
Package: tcl8.5 8.5.3-1
ProcAttrCurrent: unconfined
ProcCmdline: tclsh /usr/bin/msort-gui
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: tcl8.5
StacktraceTop:
 Itcl_CreateMemberFunc ()
 Itcl_CreateMethod () from /usr/lib/libitcl3.2.so.1
 Itcl_InstallBiMethods ()
 Itcl_ClassCmd () from /usr/lib/libitcl3.2.so.1
 ?? () from /usr/lib/libtcl8.5.so.0
Title: tclsh8.5 crashed with SIGSEGV in Itcl_CreateMemberFunc()
Uname: Linux 2.6.27-7-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:Itcl_CreateMemberFunc (interp=0x6feb70, cdefn=0x0, name=0x7f9f1000301f "cget", arglist=0x7f9f10001d28 "-option", body=0x7f9f10001d30 "@itcl-builtin-cget", mfuncPtr=0x7fff1b972908)
Itcl_CreateMethod (interp=0x6feb70, cdefn=0x0, name=0x7f9f1000301f "cget", arglist=0x7f9f10001d28 "-option", body=0x7f9f10001d30 "@itcl-builtin-cget") at ./generic/itcl_methods.c:318
Itcl_InstallBiMethods (interp=0x6feb70, cdefn=0x0) at ./generic/itcl_bicmds.c:213
Itcl_ClassCmd (clientData=<value optimized out>, interp=0x6feb70, objc=<value optimized out>, objv=<value optimized out>) at ./generic/itcl_parse.c:278
TclEvalObjvInternal (interp=0x6feb70, objc=3, objv=0x8d3050,