CeeBee, you hit the nail on the head. I ran Poser after each stage of installing, the initial install, the SR1, and then after the face room installers. The xml file looked ok but one of the installers must have made a mess of updating it somewhere, presumably at line 83 - I'm not about to go through all that again to find out which one the culprit was but I suspect that it might have been the installer for the original Miki.

Anywho...I replaced the file with the one from Apollo - the only figure I hadn't got around to re-installing yet - and lo, it all works fine again.

Thank you eveyone for your input.