Please may I ask a Q when you want to download some think from the down load station and it comes up as a red line and wont down load what dose this mean all other downloads are fine thank you for your time in adavence
Typically this is because you have attempted to download an asset that is one or more build versions beyond your current one.
Assets at or below your current build can be downloaded, but Content Manager will prevent you from downloading assets crafted for later versions of Trainz.
This link shows all the Trainz build numbers and their corresponding Trainz versions.
For example: according to your timeline you have TS12 as your latest Trainz version - I will assume that it is TS12 SP1. The build number of TS12 SP1 is 3.7 so you can download and install any asset from the DLS that is designed for builds from 1.3 upto and including 3.7. Higher build numbers will need later versions of Trainz than TS12 SP1. An asset built for build 4.3, for example, would require you to have TANE SP1 installed.
To add if you right click on the column headings and put a tick in build version, you can see what version of Trainz an asset is for before trying to download it.