Struggling to apply material to structural part

Hello,

I am struggling to apply my material to the structure I want to run FEA on. As suggested in the tree, the "nylon drone" seems to have been applied to all my bodies, however the assistant does say that the "part" section is incomplete and I have a material definition error when run the job. It is worth noting that the material works fine for structural analysis in the topology optimisation module for example.


Thank you for your help