Hi. I'm trying to add a subcircuit to a schematic. I create the asy symbol file with labeled pins. I create the asc schematic in the same (LTspice sym) folder as the symbol with net labels identical to the pin names. I add the symbol to another schematic. If I right click on the symbol, it shows that the corresponding asy and asc files are linked as they should be, but still reports the subcircuit as among the 'Missing schematic(s) of the hierarchy:', if I try to simulate. And the next time I startup LTSpice and right click on the symbol, there is no longer any corresponding asc file in that dialog at all. Can anyone tell me what I'm doing wrong? Thanks.