Help file corrupt


I am using VP Suite for UML (Pro) Version 8.2

When I go to help it says I need to download a helpfile. The system internal download breaks with a connection failure.
However, I downloaded the jar manually and put it into the lib folder.

This is the address I get when trying to download the help file from within VP:

When I go to help now, it says I have an invalid help file. How come? Where can I get a valid one?