I had BSoD issues too. I think your runtimes are still there, you just cannot access them with Poser. Maybe your issue is the same as mine has been. The reason for my BSoD was an automatic IE update, or maybe an Adobe Air update or both, without having updated my windows. So it is nessecary to let win7 perform an automatic update too. After all this was done, a complete un/reinstall of Poser was required.