now the sim should run. In a basic LTSpice IV install you will not have as many options. We have tube libraries available from 4 sources (maybe more) so we have to match our symbol to our model. Some models include the filament which complicates matters further. Once you load and run your first sim just make a note which symbol you used. The models I sent out are "generic" meaning work with the spice model which came in the bundle. I hope this helps.