I have been having some issues with certian built-in trains in the game causing graphical bugs and crashes. My first step of fixing it was to patch my game to the most current version. However, upon going to the website and looking through the patches, I couldn't find my inital version. I have ts 2010, and the current build number is 43361. However, that build number does not appear anywhere in the list of patches. I bought- - this game several years ago, so I don't know if that is a possible reason.