Javascript call of Java method works on some systems, not others

I have an applet that I embed in my page with the <APPLET> tag. Then I have javascript that calls a method in the Java .class file. This works on most systems that have java.

However, on one system (and possibly others) I get an error saying 'no such method exists'. I tried clearing out the browser's cache and the Java cache, but still get the same thing. I can be on 2 different computers, and the one works, but this other doesn't. I'm sure it's settings with this 1 computer, but I'm not sure what setting it could be.

Thanks.

[563 byte] By [mKenyona] at [2007-10-1 23:49:07]