The same happens here on Gentoo. I've attached a strace logfile, maybe this helps you fixing this.

Version information:
[ebuild   R   ] kde-misc/katapult-0.3.1.3  USE="xinerama -arts -debug*" 0 kB

Console output:
elias@osgiliath ~ $ strace -o katapult.strace katapult
kio (KMimeType): WARNING: KServiceType::offers : servicetype Katapult/Catalog not found
kio (KMimeType): WARNING: KServiceType::offers : servicetype Katapult/Display not found
KCrash: Application 'katapult' crashing...

System information:
elias@osgiliath ~ $ emerge --info
Portage 2.1.1_pre5-r2 (default-linux/x86/2006.0, gcc-4.1.1/vanilla, glibc-2.4-r3, 2.6.17-gentoo-r3 i686)
=================================================================
System uname: 2.6.17-gentoo-r3 i686 AMD Athlon(tm) XP 1700+
Gentoo Base System version 1.12.4
Last Sync: Tue, 22 Aug 2006 18:50:01 +0000
distcc 2.18.3 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled]
ccache version 2.4 [enabled]
app-admin/eselect-compiler: 2.0.0_rc2-r1
dev-lang/python:     2.3.5, 2.4.3-r1
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache:     2.4-r2
dev-util/confcache:  [Not Present]
sys-apps/sandbox:    1.2.18.1
sys-devel/autoconf:  2.13, 2.60
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2
sys-devel/binutils:  2.17
sys-devel/gcc-config: 1.3.13-r3
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.17
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -pipe -fomit-frame-pointer -fforce-addr -falign-functions=4 -march=athlon-xp -mfpmath=sse"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/NX/etc /usr/NX/home /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/eselect/compiler /etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/splash /etc/terminfo /etc/texmf/web2c"
CXXFLAGS="-O2 -pipe -fomit-frame-pointer -fforce-addr -falign-functions=4 -march=athlon-xp -mfpmath=sse"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig ccache distlocks metadata-transfer sandbox sfperms strict"
GENTOO_MIRRORS="ftp://ftp.join.uni-muenster.de/pub/linux/distributions/gentoo ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo ftp://ftp.join.uni-muenster.de/pub/linux/distributions/gentoo http://mirrors.sec.informatik.tu-darmstadt.de/gentoo/ http://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/ ftp://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/ ftp://ftp.gentoo.mesh-solutions.com/gentoo/ http://pandemonium.tiscali.de/pub/gentoo/ ftp://pandemonium.tiscali.de/pub/gentoo/ http://gentoo.intergenia.de "
LANG="de_DE@euro"
LC_ALL="C"
LINGUAS="de"
MAKEOPTS="-j6"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'"
PORTAGE_TMPDIR="/mnt/multimedia/porttemp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage /usr/portage/local/layman/vmware /usr/portage/local/layman/musicbrainz"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="x86 16bit 3dnow 3dnowext 7zip S3TC X a52 aac acl acpi alsa apm asf automount bash-completion berkdb bidi bluetooth bonjour bzip2 cairo ccache cdb cdda cddb cdinstall cdio cdparanoia cdr cli commercial cpudetection crypt css ctype cups dba dbus dga dio djbfft djvu dlloader dmx dpms dri dts dvd dvdr dvdread dvi edl effects elibc_glibc encode exif exscalibar fam fame fat fbcon fbsplash ffmpeg fftw firefox flac flash ftp gdbm gif gimp gimpprint glitz glut glx gphoto2 gpm grammar gs gstreamer gtk2 gzip hal hbci howl iconv icq id3 imagemagick imap imlib inkjar input_devices_evdev input_devices_keyboard input_devices_mouse ipod irc irmc isdnlog jabber jack jack-tmpfs java javascript jingle jit jp2 jpeg jpeg2k jumpplay kcal kde kdepim kernel_linux kig-scripting kipi kqemu lame latex lcms ldap ldapsam libvisual libwww linguas_de live logitech-mouse lzo lzw mad maildir math matroska memlimit mime mjpeg mmap mmx mmxext mng motif moznocompose moznoirc moznomail mozsvg mp3 mp4live mpeg mpeg2 mplayer musicbrainz ncurses network nfs nls nodrm nowin nptl nptlonly nsplugin ntfs ntlm nvidia ogg openal opengl oscar oss pam pcre pda pdf perl perlsuid physfs player plugin png pnp portaudio posix povray ppds pppd python qemu-fast qt3 qt4 quicktime rdesktop readline real reflection rtc samba sametime sasl screen sdl sensord session slp sms sndfile sockets softmmu spell spl spreadsheet sse ssl statistics stencil-buffer stream subtitles subversion svg svga symlink syslog sysvipc szip tetex theora thesaurus tidy tiff transcode truetype truetype-fonts type1 type1-fonts udev unicode usb userland_GNU userlocales utf8 vcd vcdimager video_cards_nv videos vidix vim-pager visualization vlm vnc vorbis webdav webservices win32codecs winpopup wma wordperfect wv wxwindows x11vnc xanim xcomposite xine xinerama xml xorg xpm xrandr xscreensaver xv xvid xvmc zlib"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS, PORTAGE_RSYNC_EXTRA_OPTS