CorelDRAW Graphics Suite X5 - Installation not run

OS-Version: Windows 7 Ultimate SP1
Previous product: Corel Draw Graphics Suite X3

Problem:
After starting the installation a screen with the text "Initializing the Setup - Please Wait" was shown.
It disappears and then nothing happens.
In taskmanager the process "setupARP.exe" is still running and not ends.
In the windows eventlog the warning. "Failed to connect to server Error: 0x800401F0" is logged.

Remarks: Firewall and virus scanner are down.

does anyone have any ideas?