NCV Graph not showing up

Hi all,

I have just tried to set up a custom NCV graph to monitor the room temperature.

An external script generates a status page with the following output (example):

Temperature: 22.92

I have added the following entries to my hobbitserver.cfg:

TEST2RRD="....,roomtemp=ncv"

NCV_roomtemp="Temperature:GAUGE"

GRAPHS="...,roomtemp,ncv"

My roomtemp.rrd File has been created and updates regularly. Output of rrdtool dump:

<rrd> <version> 0001 </version> <step> 300 </step> <!-- Seconds --> <lastupdate> 1145970097 </lastupdate> <!-- 2006-04-25 15:01:37 METDST -->

    <ds>
            <name> Temperature </name>
            <type> GAUGE </type>
            <minimal_heartbeat> 600 </minimal_heartbeat>
            <min> 0.0000000000e+00 </min>
            <max> NaN </max>

            <!-- PDP Status -->
            <last_ds> UNKN </last_ds>
            <value> 2.1708600000e+03 </value>
            <unknown_sec> 0 </unknown_sec>
    </ds>

After that, I have added the following to my hobbitgraph.cfg:

[roomtemp]

    TITLE Server Room Temperature

    YAXIS degrees

    DEF:temp=roomtemp.rrd:Temperature:AVERAGE

    LINE2:temp#FF0000:Room Temperature

    COMMENT:\n

    GPRINT:threads:LAST: \: %5.1lf (cur)

    GPRINT:threads:MAX: \: %5.1lf (max)

    GPRINT:threads:MIN: \: %5.1lf (min)

    GPRINT:threads:AVERAGE: \: %5.1lf (avg)\n

There is no graph showing up on status page nor on the trends page. On the status page there is only a link "hobbit graph ncv:roomtemp" and on the trends page only a link "hobbit graph roomtemp".

What am I doing wrong? Do I have to configure other things than these?

Thank you in advacne for answering.

Chris