Optimization with Geometry Gym error when obtaining results

Hi,

I finished the greatest part of the bridge optimization project with Grasshopper and Geometry Gym. From the results I can obtain the node displacement and the maximum node displacement.

I also managed to obtain the axial forces and perform a unity check for compression (and buckling) and tension for the beams. I set the solver settings for 'new model' to true, close model 'true' and solver on to 'true'.

By first starting up GSA and then Grasshopper, the data for the node displacement and the axial forces is retrieved and works correctly. But when I change the variables (for example the span length) the 'results' component of the axial forces turns red and gives an error, while the node displacement component is still working and adjusts the result to the new span length.

When I manually set the 'close model' function in the results component to 'false' the axial force results are adjusted to the new model. This also happens when I set the solver manually from true to false and then back to true. But for the optimization process, this can't be manually done. I thought the settings 'new model -- true' would take care of this, but this doesn't work for me.

Does anyone know how to solve this error?

The first picture shows the results of the axial forces (before adjusting the variables). The second picture shows the error when I made a change in one of the number sliders of the variables (for example span length). The third picture shows that I manually changed the settings of the 'result component' (close model from 'true' to 'false') and then the component does show the new results of the axial forces for the new span length and the error is gone until I make another change in one of the variables.