FamilyIstance.bygeometry exception

Hi! I’m a newbie trying to run a simple script but Dynamo can’t import my acis solids because of an exception about naming (I think).

The error was:
The filename should not be null or empty

Can anyone help me please?

Thanks,
George

Make sure your Material Name is a string by adding “” around the Default ( A grey Node does not have all it’s inputs and so is not passing a value.)

Switch the Lacing on the Import Node to Longest, it is now reading a list where it expects a string.

Thanks! With import Node do you mean the last one? I’ve tried but seems not working yet