Next to your name in forum posts, you should see a bar - TS2009 will appear as a circle/dot on that bar if it is registered. As I cannot see either the bar (version roadmap) or the dot with TS2009 above, I'm guessing that you have either got different accounts for the forums and for the actual game, or you have not registered your serial number.
If you have installed SP4 (which will make the build number 44653) the problem involving Driver is likely to be related to TrainzUtil (one of the background processes) - make sure there are no items open for edit in Content Manager (you can check this by using the Open for Edit tab in Content Manager - if there are any listed, use Ctrl and A to select them all then press Ctrl and M to commit them)
Shane
EDIT: Have a look next to my username in this post to see the bar.