Hehe... sorry for being a bit grouchy there.... but maybe you should stop letting your cat walk on your keyboard!
OK. Well, you're going to have to address all the problems I listed above. Right now it's bitching about the potentiometer, because you don't have the model for it installed (or loaded). Just replace it with a pair of resistors.
After that, it'll pitch a fit about D2 (because it doesn't have a model for 1N5404), the TVS diode that you've labeled "K", S1 (because first, there's nothing connected to the control terminals, and second, it doesn't have a model specified), and D3 (because "zener diode" isn't a proper value). Just take those out and get the circuit working, you can add them back in later.
Then, once it starts simulating, it won't work
well, because V2 is a short circuit across the output. (It's a 0V voltage source.) Remove it.
When it first starts running, it might get stuck (giving the messages "Stepping Source" and "Damped Pseudo-Transient Analysis" in the status bar). You don't have to wait for those to complete, just bang on Esc a few times. (Three times IIRC)