The graphics issue may or may not be related. I should have mentioned this before...
Do any other trains look like this with weird textures and lines?
If they do you need to do a couple of things in Content Manager.
1) Go into the file menu and choose settings.
2) Go to MISC and uncheck compression.
3) Hit Save to save your settings.
4) Set your search filters to Location = Local and Built-in = False.
5) Highlight all the assets listed by clicking on the first one and then pressing ctrl+A on your keyboard.
6) Open the assets for edit.
7) Once all your assets are opened, and the birds begin to sing... Wait. That's not what I meant!

With all the assets still highlighted, press ctrl+E on the keyboard.
If you clicked anywhere, you'll have to reselect them all again in step #2.
8) Press Ctrl+M again to close them.
This will cancel the compression on the assets. Hopefully this will fix the graphics problem. It will not repair actual problems with the assets such as script errors, broken config files, etc.
You may have to reinstall again plus the patches if none of the steps we've given you to repair the problems works. Sometimes this is the fastest approach and it beats fiddle-farting around forever and never getting anywhere because the problems are unrepairable anyway.
John