Navishphere simulator downloading

Hi,

After downloading the Navishphere simulator from internet, when i try to install it, i get the following message in the 'installanywhere' window - 'This application has unexpectedly quit. Invocation of this Java Application has caused an Invocation TargetException. This application will now exit.(LAX).

I am using a W7-32bit PC.

Can someone please let me know how to get around this problem?

Shajiv