Don't upgrade to 6.1. Those idiots got a major issue with it where workspaces will never load.
Check this thread for more info.
http://forum.esignalcentral.com/showthread.php?s=&postid=129712#post129712

M,

It is a shame that you are having trouble with QCharts. I sympathize with your predicament, I hope the problem gets resolved soon.

Good Trading,

Al Kamego

Actually, M, I still have 6.0 and it has the same problem. This is old news, but their temp workaround has been working for me, from billbled's post on 10/15/09 at 1:06 AM (what the heck is up with their time stamp, it's still six hours away from 10/15 here now).