An invalid argument was encountered

Hi, I am trying to install Xcelsius on my Dell D600 Laptop.

1.6MHZ processor, plenty of Memory.

Windows XP

Every time I load Xcelsius Present 2008, and I have tried 3 times now, rebooting machine after each try,

When I try to open the program, I get a MS Windows XP error message, saying

u2018An invalid argument was encounteredu201D

With a click u2013 box saying u201COKu201D.

I click the OK and the box goes away, but Xcelsius still does not open. What am I doing wrong?

please tell me what to do, to open the program

thanks

Scott Olson