I have a model that, when run, reports the following in the stdout:
[warn] Custom isotopics and material modifications have both been defined for Custom for component<Hexagon: homogeneous component>. Please consider carefully if these are in conflict.
[warn] Custom isotopics and material modifications have both been defined for Custom for component<Hexagon: sodium>. Please consider carefully if these are in conflict.
My blueprints do not contain any material modifications, so this error appears to be incorrect.
I cannot attach the inputs to this ticket, but will send them to you offline @john-science .