Larian Studios Forums Divinity 2 - Ego Draconis (English) Technical problems game will not start

Hi
I have successfully installed Divinity 2 but when I click in the start icon the game wil not launch. I get no error message
I am running Win7X64. I have tried starting as admin and in XP compatibility mode.
I have uninstalled an reinstalled twice made suer I have the correct directx, driver etc
I even went thru has removed all references to the game from the registry between installs
If I have task manager open when I try and launch I can see the divinty2.exe appear in the in the processes list and it stays for about few seconds then disappears.
Any ideas please or should I just take it back for a refund

Install PhysX (be sure it is really installed, check c:\Program Files\AGEIA Technologies\)
Install VC++ Redist SP1

I have done all that. still the game will not start.
Also when I install and I have installed about 6 times now. The setup program does not automaticaly stop when the insatll is finshed.
that is the game installs. I click on the finsh button let it install direct x which it does fine and click finsh fot that and the I have the setup program still running in teh back ground. I left it fro over 1 hour last night. When I go to close windows it give me a message that it is waiting for a response from Setup.exe and the only thing I can do is forced it closed
System Specs
CPU Intel E6750
Ram: 6Gb
OS: Win 7 home premium
Video: 8800GTx