I also tryed to install the update 4.05-02 but it didnt help.
I just got a mail from Steve Bell, you can read here what he wrote:

"Hi Klaus,

Again, I apologize for the delay. We will be re-releasing 4.05 very
soon (possibly tomorrow). If it still doesn't work with that, I'd like
you to send me your serial number and vegetation keys so I can
check out what is wrong.

Thanks for your help.
Regards."