Cannot install Contribute 6.5 on Windows 7 Machine.

Tried installing Contribute 6.5 as an indipendent application and was able to install it but the moment it launches, it hangs and need to be closed from the Task Manager. It freezes the screen.

Tried launchin offline (disconnecting it from the internet).

Uninstalled all adobe applications and did tried with hidden admin mode.

Tried with different user as well.