Hello everyone! I would like to ask you if anyone can help me solving my Problem with mcnpx. I created a file with a watertank, a nozzle and a slit blend on the surface. I also inserted a protonbeam and would like to plot the dose and fluence for examplte with Moritz. But when I execute the file the error: "no plot because it would be empty" shows up. I hope anyone can help me. The file runs but I just have the Problem with plotting the dose and fluent. Thank you!