village come to the rescue
http://www.elitetrader.com/vb/showthread.php?s=&threadid=51487&perpage=6&pagenumber=1
http://www.elitetrader.com/vb/showthread.php?s=&threadid=66033&perpage=6&pagenumber=1
'borrow' a laptop with XP, install a fresh copy of qchart, copy your template to the laptop then try the histogram chart again. If the chart works then it's vista probl.