Low energy neutron xsec not found for some media

Geometry and Materials
2

Dear Xi,

the actual error message is located at the end of the output file of the first cycle:

  **** Low energy neutron xsec not found for some media           12          13  ****
 SULPHUR

For an explanation, and explanation of common errors see slide 21:

And slide 5 from

Cheers,
David