The crossover tool does not seem to be working in the editor. I select it, and then select the track and nothing happens. I even tried to hold and move it and all it does is move the camera. Any ideas?
I'm assuming you are in Network Edit mode and have selected the Yellow Cross, the 4th tool from the top on the left hand side. As you move the cursor across one of the tracks you should see the yellow cursor lock onto the centre of the track. At the point where you want the crossover to begin click the rail centre where the yellow cursor is locked, then release the mouse and move the cursor over to the other parallel track and move it away from you up the centre of that track until a red guide appears outlining where the crossover will be placed assuming you click again. Press escape rather than clicking the mouse if you think it doesn't look right and want to start again. If you are having difficulty getting the yellow cursor to lock it may be that the Ribbon snap Radius is too small. Mine is set to just over 100 cm and that works fine for me.
An update to this, it seems the crossover tool is buggy as the height for the crossover will either be incorrect, or the tracks will be angled so sharp it would cause a derailment. Looking at the stream, it seems they didn't use the crossover tool at all in the masterclass either.
I used the tool to do two crossovers on the route I'm currently working on and it seems to work well. I did notice that if I stretched the length of the crossover to the max distance and then left clicked it, the crossover track would disappear. By backing off some before clicking to complete the crossover, it worked. I tested the crossovers by manually running a train through in all directions, and they seem smooth and work fine. The parallel tracks at the location I'm using the tool with has no gradient, so I don't know if that would make a difference.
I have had that problem and found that it was a good idea to ensure the parallel tracks had very similar heights and gradients in the crossover area. Failing that it is possible to adjust node heights adjacent to the two switches to even out any rail height irregularities.