xsane crashed with SIGSEGV in strrchr()

Binary package hint: xsane

i tried to change the output format from .pnm to .jpeg which resulted in xsane first freezing and then crashing
i am using hardy.

ProblemType: Crash
Architecture: i386
Date: Fri Apr 18 14:40:55 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/xsane
NonfreeKernelModules: ath_hal
Package: xsane 0.995-1ubuntu1
PackageArchitecture: i386
ProcCmdline: xsane
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: xsane
Stacktrace:
 #0 0xb75e76c3 in strrchr () from /lib/tls/i686/cmov/libc.so.6
 #1 0x08050179 in ?? ()
 #2 0x00000000 in ?? ()
StacktraceTop:
 strrchr () from /lib/tls/i686/cmov/libc.so.6
 ?? ()
 ?? ()
ThreadStacktrace:
 .
 Thread 1 (process 21275):
 #0 0xb75e76c3 in strrchr () from /lib/tls/i686/cmov/libc.so.6
 #1 0x08050179 in ?? ()
 #2 0x00000000 in ?? ()
Title: xsane crashed with SIGSEGV in strrchr()
Uname: Linux 2.6.24-16-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin plugdev video
SegvAnalysis:
 Segfault happened at: 0xb75e76c3 <strrchr+163>: mov (%esi),%edx
 PC (0xb75e76c3) ok
 source "(%esi)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA