OpenCPN 3.0.2 don't want to start

[sheki011]

Hello everybody!
I have a problem, and I hope that someone can help me.
I've downloaded the latest version of opencpn (3.0.2.), installed it following the instructions(turn off antivirus, unplug network cable...) and the installation process passed ok 'till the moment when i had to push the Finish button. The computer started ''thinking'' for a couple of seconds and then nothing happend.
Time after time, installation after uninstallation there is no changes.
Every time I try to start the program, the computer just take it's time to think and nothing happens.
The machine is running on win7 ultimate x64 sp1, everything updated correctly. I even downloaded the runtime application mentioned on the web page, but belive me, nothig happening yet.
I have been reading posts on the forum for the last 20+ hours and I have found a similar problem to this one, with the only diference that bobmax's opencp has started and then died...
Please, tell me what to do? What I need to post here so you can see what is going on?
Thank you all!