Rapid Miner does not work properly with the latest Java version (Java 6 Update 10), The parameter panel is broken with operators that have certain paramter types (my guess). I can see hundreds of lines of the following:
I have this problem e.g. with the ProcessLog operator and many other operators. There's no problem with Java 6 Update 7.
"OS independent they said, they did not say: Version indepenent"
Same error here, if I update to the newest version.
But there is a simple solution: Use Update 7 until we have fixed this. We're working on it. But I don't know whats going on there and why this fails now.
the bug has been fixed and is available in the current CVS versions.
By the way: It hasn't been the thread violations, instead the java people have changed some underlying code, causing a method call loop "a calls b, b calls a". That's why the stack did overflow.