java-object-diff library problem

Hi everybody.

Did anybody play with the java-object-diff library, author Daniel Bechler?

I thought it will be an adventure for 2 hours but I’m slipping for a week and still can’t tune it.
Whatever I did, it diffs all the object properties ignoring my settings and, at the end, throws:
java.lang.IllegalStateException: Couldn’t find a differ for type: [Ljava.net.URL;

Can anybody help?

Thanks.