Newbie here piggy backing off of this post with the same problem.
Installed the software but cannot get it to run with the same error message as Original Poster...

My specs:
Windows ME
BSecure Internet Protection (easy to disable the FW)
512
not sure...but i'd imagine enough
DSL
Westell & a Dell 2300 Wireless Router
home
4.10.5 LW & 1.5.0 Java
Zoomtown
Yes, just my laptop
My first attempt hence the newbie title 8)
Test works


Thanks in advance