SP1 crashes built-in sessions?

I may be doing something wrong so...

Installed 2006, ran the Maria's Pass Amtrak Driver session. No problems

Installed SP1

Tried to run same scenario. Session never completely loads. Put me in the middle of a flowery field with no sign of railroad and no instruction box.

Most of the third-party content now also fails, sometimes with script or stack errors. About all that works are the tutorials.

If I can't run the built-ins, how can I ever expect use Content Creator to download other assets?

Did you install SP1 on a clean 06 install? If you installed SP1 after you opened 06 then that is your problem.

OK, sounds totally weird. Most updates sit on top of the original program, but if Auran wants to be counter-intuitive they own the factory.