png not display in graph ...

[youza]

i have cacti but graph do not get out, but no error in the debugging graph

and debug is :

C:\xampp\htdocs\cacti/rrdtool.exe graph - \
--imgformat=PNG \
--start=1302873303 \
--end=1302959703 \
--title="Localhost - Logged in Users" \
--rigid \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
COMMENT:"From 2011/04/15 21\:15\:03 To 2011/04/16 21\:15\:03\c" \
COMMENT:" \n" \
--vertical-label="users" \
--slope-mode \
--font TITLE:12: \
--font AXIS:8: \
--font LEGEND:10: \
--font UNIT:8: \
DEF:a="C\:/xampp/htdocs/Cacti/rra/localhost_users_8.rrd":users:AVERAGE \
AREA:a#4668E4FF:"Users" \
GPRINTLAST:"Current\:%8.0lf" \
GPRINTAVERAGE:"Average\:%8.0lf" \
GPRINTMAX:"Maximum\:%8.0lf\n"


please help me ....

[Linegod]

http://docs.cacti.net/faq#initial_graph_does_not_appear