mathwar don't start, Gdk-Error

[Kris]

I installed mathwar 0.2.4-4build1 with Adept Manager. My system is 2.6.24-19-generic (Ubuntu 8.04.2) with KDE 3.5.10.

Then I tried to start it in the console by typing: mathwar
and the console said:

Gdk-ERROR **: BadDrawable (invalid Pixmap or Window parameter)
  serial 228 error_code 9 request_code 145 minor_code 5
Locking assertion failure. Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb780a767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0xb780a81e]
#2 /usr/lib/libX11.so.6 [0xb7b8f518]
#3 /usr/lib/libX11.so.6(XDeleteProperty+0x25) [0xb7b670a5]
#4 /usr/lib/libgdk-1.2.so.0(gdk_set_sm_client_id+0x62) [0xb7c603f2]
#5 /usr/lib/libgnomeui.so.32 [0xb7e70c35]
#6 /usr/lib/libgtk-1.2.so.0(gtk_marshal_NONE__NONE+0x16) [0xb7d32b06]
#7 /usr/lib/libgtk-1.2.so.0 [0xb7d670a2]
#8 /usr/lib/libgtk-1.2.so.0 [0xb7d6973f]
#9 /usr/lib/libgtk-1.2.so.0(gtk_signal_emit+0xed) [0xb7d69d5d]
#10 /usr/lib/libgnomeui.so.32(gnome_client_disconnect+0xe6) [0xb7e6e496]
#11 /usr/lib/libgnomeui.so.32 [0xb7e6e5a8]
#12 /lib/tls/i686/cmov/libc.so.6(exit+0xd4) [0xb785a084]
#13 /usr/lib/libgdk-1.2.so.0 [0xb7c614d1]
#14 /usr/lib/libX11.so.6(_XError+0xfe) [0xb7b8873e]
#15 /usr/lib/libX11.so.6 [0xb7b8fe5c]
#16 /usr/lib/libX11.so.6(_XReply+0x15a) [0xb7b9021a]
#17 /usr/lib/libX11.so.6(XQueryExtension+0xaa) [0xb7b7e06a]
#18 /usr/lib/libX11.so.6(XInitExtension+0x3b) [0xb7b72d4b]
#19 /usr/lib/libXrender.so.1(XRenderFindDisplay+0x176) [0xb7537e86]
Gdk-ERROR **: BadDrawable (invalid Pixmap or Window parameter)
  serial 229 error_code 9 request_code 55 minor_code 0

Wath does that mean to me? How can I start this game?
Thank you very much for help!!!!