I started to work on my own scenario after a couple of days "rest" when I wanted to mark a track with a destination marker. What normally is an easy task, turned out to be kind of weird:
The marker normally consists of 3 posts of which the middle one has a coloured cone. This one just has the two that you can stretch.
I noticed also that on any other scenario in World Editor mode no marks on tracks can be seen; only on the 2D map. See attachment at the top: here I stretched one post a bit and got Destination30, the original placement is now Dest19. And big empty space in between.
I have done a validation of files and when that did not worked, I deleted and reloaded TS2015 and it still does not work.
So as of now everything else works normal: career, standard and quick scenarios.
My specs: Intel(R) Core(TM)2 Duo CPU E4600 @2.40GHz (2 CPUs), ~2,4 GHz. Free space 97 GB
Memory:4096MB RAM, available OS Memory3582 RAM, DirectX 11
Card: NVIDIA GeForce GTX 670
I appreciate any help to solve this as I like creating scenarios