RRD error updating

list Usa Ims
Mon, 25 Jan 2016 22:59:11 +0000 (UTC)
Message-Id: <user-0f1787edc8df@xymon.invalid>

Hi,
My graphs are not plotting.

I'm getting this in the logs:
RRD error updating /usr/lib/xymon//data/rrd/www.xxxxx.com/xxx.rrd from 192.168.1.160: /usr/lib/xymon//data/rrd/xxxx.com/xxxx.rrd: not a simple signed integer: '.780051218'
I need to graph decimal numbers. Please help, thank you.
usaims