Allow me to add to the many software problems mentioned today. My problem is that Java will not open the chart. I get the following error message "java.lang.ClassFormatError: Incompatible magic value 218762506 in class file PMChart". I have checked with the Java people who referred me to the writers of the program. I sent an e-mail yesterday to OST, no reply yet. Can anyone please help with this problem as I am currently severely hamstrung without charts.