Overture Crashes After Intro!

[Googolplex]

Penumbra work fine for me on Win7 64.

So, I can't help you really. But from other games I knew that there can be issues with multi core processors.

So try this and tell us about your story.

Start Penumbra.exe as administrator.
Then minimize the game and open the task manager and choose in "processes" the penumbra.exe and click right and disable in (german) Zugehörigkeit all cpu cores except Core_0 and Core_1.

You also can set compatibility of Penumbra.exe to Windows XP SP3.