*** ERROR # 1461 *** in the input data: Card "WEIGHT" is not allowed for this subcase type.

As title, I'm trying to optimize a component with thermal loads on it.

The model works fine until I define the optimization parameters, which are one design variable, two responses (volumefrac and weightedcomp), as constraint the volume fraction and as object the weight minimization.

When I run the model I get:

*** ERROR # 1461 *** in the input data:
Card "WEIGHT" is not allowed for this subcase type.

Can someone help me with that, please ?

Michele