we had that on a machine or two (got off lucky it seems). Uninstall via ePO and re-install seemed to bring it back to life!
Did you figure out a way to fix your issue?
I have had close to 2000 machines where hips files got removed. On some of them the restore did the trick.
On others, the restore brought back the file, but when you dig a little, you figure out that there a lot of stuff still missing...
Let me know if you found a way to fix this.
We're involved with Platinum support and are close to having a solution, but I'm not sure this will be a publicly available solution.