Solution exeption:'NoneType' object has no attribute 'name'

Hi @mostapha,

thanks very much for having a look at it.

First of all this message appears when I open the file

This same issue happened me opening GH after installing the new version of HB [+]. I did think of mention it before, but now I think it may be important. It happened in the 3 computers I have installed the new version in.

Once I opened the file this message ballon appeared but I did not change the component, as I think that it is because the 2 and 3 layers has been removed.

I set boolean to true to run the simulation, but no system window appeared. Nonetheless this is what it showed

It seems that no ill files have been generated

Please let me know how to proceed.
Best regards,

Federico