Hi George,

Sorry for the trouble.  I think a fresh install is not the only option, but it might be the simplest ;).  It seems there were some challenges with using conda to update, including that it sometimes just seems to take forever.   I'm not sure what to do about that. 

I think pip install should work, but you may need to manually blow away some of the installed folders in "python3.7/site-packages", as there can be confusion about where the newly installed packages go based on the installation method (that this, there might be a folder called 'larch' and there might be one called 'xraylarch-0.9.45-py3.7.egg', and similarly for other packages.   You could just blow away (a partial list, and maybe not exhaustive, but ones that I know were changed between 0.9.45. and 0.947 and potentially causing confusion), these folders under  python3.7/site-packages/  in your installation: 

       larch 

       xraylarch*

       pyepics*

       epics

       pyshortcuts*

       wxmplot*

       lmfit*

       silx*

       uncertainties*

 

Then a fresh `pip install xraylarch` should work.  If you try that and still run into problems, please let me know what you see.

--Matt