i know the Artrage team did a great work to create Artrage 5. I looked at the videos on youtube
and purchased Ar5 and download it to enjoy this great software.

Unfortunately the installation stopped with an alert containing these text:
...disk1.cab has an invalid signature...
The installation rolled back all changes (That's cool).

With Artrage 4.5 the installation was never a problem on Windows 7.
So what's happend?

Can someone please help me?