Comment 1 for bug 1783019

OK, I have found a workaround to this problem.

If I copy the lxml directory from C:\Program Files\Inkscape\lib\python2.7\site-packages\lxml to a place that I know is being searched ( C:\Program Files\Inkscape\share\extensions\lxml ), the problem goes away.

Whether this ( failure to place the directory in one of the searched paths ) is the root cause of the problem is not clear. Another possibility is that the system path setting requires adjustment.