casa-mp-base

--- FIAT/expansions.py.orig 2018-06-14 04:30:19.000000000 -0700

+++ FIAT/expansions.py  2018-08-18 10:49:46.000000000 -0700

@@ -46,7 +46,7 @@

         out = []

         try:

             out = [sympy.diff(F, X[j]) for j in range(D)]

-        except AttributeError:

+        except (AttributeError, ValueError):

             # Intercept errors like

             #  AttributeError: 'list' object has no attribute

             #  'free_symbols'