Yeah, I also tried leaving out the index.jsp, but that doesn't get my online with the bank :-(
Well, I have to ask the bank if they have an alternativ system that I can use, but I'm afraid the answer is a big fat NO.
A pity that Holger Kruse' work isn't continued. I would do it if I knew a lot about Java, but I don't, so it's for the best to leave that for someone else.