I'm having an issue with timetable simulation where layers aren't loading, which causes all of the layer's services to not start. This is the warning displayed in the log: TS2: Unable to load (layer name), not enough memory budget needs 3087172Kb but only 11657216Kb remaining At first glance I thought that I didn't have enough ram, but when I looked closer the memory budget the layer needs is actually less than the amount available. It also didn't make sense because the layers had loaded fine before on previous simulations. The only changes I made to the timetable before the issue started happening were changing out some RVDs in my timetable formations, which aren't even the formations used in the layers affect by the issue. I can't seem to recreate this issue from a brand new timetable, however I tried copying everything from the current one to a new one and the issue was still happening, although now it was different layers that weren't starting. It seems that the order you create the layers affect which ones don't start because in both timetables it was the last few layers I created that don't start. For now to get my timetable to simulate successfully I am forced to delete the layers that don't start for the valid datatracks box to be ticked. If anyone knows anything about this issue a comment would be great. I'll give as much information as possible in the comments, but I'm afraid it won't be much as I don't have much of a clue whats happening either.