I had something similar happen. All of a sudden Poser was not working correctly (I forget the symptoms) and I could not import anything into VUE. I did a re-install on Poser and everything worked properly. If you want to retain your runtime, just rename it and try the re-install. After Poser is working again, you can then either copy the runtime over the one that Poser installed or have poser point to it.

Allan Thornton