If you are running build 44088, you have the latest build for TS2010.
If you are running anything lower, see http://forums.auran.com/trainz/showthread.php?t=62766 for the hotfix patch (make sure you download and install the right one for your current build of Trainz - shown at the bottom right of the Launcher window)
i reformated my computer after doing so i installed the latest video card drivers then i reinstalled ts 2010 and all its service packs after each pack i rebooted the computer windows {7 ultimate 64bit} as soon as i rebooted after sp3 and pressed the icon for trainz 2010 the main sceen came up then another window telling me that a patch is avalible so i installed the patch and behold it stuffed the trainz install and windows started blue screening.
regards steve
I wouldn't patch past SP3, there are many posts regarding issues with the 'Hotfix' which in the absence of any documentation whatsoever i believe is aimed purely at sorting a Save issue that affected some users...
Certainly I respect your opinion Andy, but I installed the hotfix on a clean version of 2010 (yes...I finally found a copy cheap enough), and it did remove some nasty black screen problems I was having without it...