Paul, I did a Google search on 'Xerces panic error' and it appears to be
something that occurs when a program written in Xerces C++ language doesn't
compile correctly. My guess is that the program didn't install cleanly, and
you're going to need to uninstall and reinstall it. Before doing that,
however, you might want to wait a little bit and see if anyone else on this
forum with more knowledge than I responds to your question.