Well I haven't been able to enter train sim since... oh god... August?

Been busy with school but I was modeling some locos for the game. Anyways, it seems in my absence the game hasn't taken it well. Its hard to explain but I will do my best.
When opening a route everything goes fine so I set up everything for a run (this happens on multiple routes). I load the scenario to drive and random things (even the track the last time) will randomly show as missing texture. After that the game dies on me and spits out a dump file.

I find this odd as I haven't touched the assets folder since I started on the break from the game. Is there anybody here that would have an idea on whats happening? I really don't want to start from scratch again as I got 48.6 gig of assets I've downloaded over the years and have a route using many of them. any help would be greatly appreciated. thx.

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