I have come to the conclusion that to up to sp4 on 2009 does not work for me. My op system is Windows 7 64 Bit home edition. Everythings fine up to sp3, well even up to sp4, as soon as I add my S&C addon it goes haywire, problems with typing in surveyor ( loose the use of typing anything on keyboard ) loose S&C region for carz and any other region I generate to name a few problems. I looked on the forum for an answer. Question is would upgrading to Trainz 2010 resolve this or have the same results. Any help would be appreciated Thanks.