Ok, I've added fonts to installation and also modified checkers.sh for fonts:
Code:
#!/bin/sh
root=/mnt/onboard/checkers
export LD_LIBRARY_PATH=/usr/local/Trolltech/QtEmbedded-4.8.0-arm/lib
export QWS_DISPLAY=kindlefb
export QT_QWS_FONTDIR=$root/fonts
export QWS_MOUSE_PROTO=tslib:/dev/input/event1
# ??? killall nickel before start ???
$root/checkers -qws
# ??? restore nickel after exit ???
Can you provide Qt plugins listing?
ls -lR /usr/local/Trolltech/QtEmbedded-4.8.0-arm/plugins
P.S. Just in case. In your screenshot I see registration message box in the center with "Ok" button (small square). Tap on this "Ok" button. Message box should close and you can play (if everything other is ok).