Mac Java Exception

[cloudyday]

Intel Mac running 10.5.7 . I am getting a Java error that uninstalling and reinstalling doesn't solve.
The error is "Java.Lang.NullPointerException"
Is there some file I can remove or some other solution?
Thanks

[goofy]

This is a reply to an old posting but it might be helpful to answer none-the-less. I have seen this problem as well and the solution is to set WeatherLink for the Mac to run in 32-bit mode. This is done by going to the WeatherLink application icon, right-click on the icon, select Get Info from the contextual menu, and in the window that opens, under the General section, check the box for "Run in 32-bit mode".