Cacti isn't graphing APC UPS temperature

[dasBinaryGnome]

When I exported the data from the graph that won't display an image, I get the following:

"Title:",""APC - Battery Temp""
"Vertical Label:",""C""
"Start Date:","2012-01-16 11:10:00"
"End Date:","2012-01-17 11:10:00"
"Step:","300"
"Total Rows:","289"
"Graph ID:","17"
"Host ID:","2"
""
"Date","Temp"
"2012-01-16 11:10:00","NaN"
"2012-01-16 11:15:00","NaN"
"2012-01-16 11:20:00","NaN"
"2012-01-16 11:25:00","NaN"
"2012-01-16 11:30:00","NaN"
"2012-01-16 11:35:00","NaN"
"2012-01-16 11:40:00","NaN"
"2012-01-16 11:45:00","NaN"
"2012-01-16 11:50:00","NaN"
"2012-01-16 11:55:00","NaN"
"2012-01-16 12:00:00","NaN"
"2012-01-16 12:05:00","NaN"
"2012-01-16 12:10:00","NaN"
"2012-01-16 12:15:00","NaN"
...
"2012-01-17 10:20:00","NaN"
"2012-01-17 10:25:00","NaN"
"2012-01-17 10:30:00","NaN"
"2012-01-17 10:35:00","NaN"
"2012-01-17 10:40:00","NaN"
"2012-01-17 10:45:00","NaN"
"2012-01-17 10:50:00","NaN"
"2012-01-17 10:55:00","NaN"
"2012-01-17 11:00:00","NaN"
"2012-01-17 11:05:00","NaN"
"2012-01-17 11:10:00","NaN"

I can't figure out why it isn't successfully pulling the data from the APC unit... I cannot imagine why it wont display an empty graph if the data is insufficient.

--dasBinaryGnome

[BSOD2600]

Please read/follow http://forums.cacti.net/viewtopic.php?f=3&t=11747 and report back your findings.

[dasBinaryGnome]

Thanks for pointing me in the right direction. I will research this matter with the guidelines you provided soon.
--dasBinaryGnome