Sep 29, 2015 - 05:30 PM
Step 1 is to read the manual (from the launcher > File > View PDF Manual).
Step 2, ensure that Launcher > Trainz Settings > Internet shows your FCT and username are valid (and that "Disable Online Features" is unticked if you have the Offline version installed)
Step 3, click Manage Content from the Launcher to locate Download Station assets, then r-click and choose Download to commence the install process.
If you are referring to purchased content, this will appear in-game when you restart TANE. If it doesn't please submit a support ticket at support.trainzportal.com with details opf your purchase