Begin Battle Problem

[Sacred Ice]

What is supposed too happend when iI accept a battle challenge?
I click on the "here" button and then the "location chain" (the one below the Luigi-banner) says error and a text below that says "invalid battle or password ".

[HumanoidTyphoon]

I've had the same problem too. I think it says that if your oponent that you challenged hasn't entered yet...atleast thats my theory;P