Version 3.20 - (November 2007) - A quick update.
If all you want to do is operate a route you've downloaded or installed, STOP HERE, you're done. If you don't get the question you've done something wrong. If mine is the newest you should say "Yes".
#MSTS XTRACKS ARCHIVE#
#MSTS XTRACKS INSTALL#
Irrespective of the version required for the route (most route documentation will state "Xtracks 3.xx or higher", download and install this latest version, which will ensure trouble-free operation. You've downloaded a route and it says you need Xtracks to get it operating correctly.