might be a problem with your PC?
I have played them all from SH1 to SHO. Stock, fully patched, never had a problem running them on win 98, XP and now win 7 (SH4, SH5, SHO). When I did have a CTD, it was usually because of mod conflicts.
Have you checked to make sure your OS and drivers are up to date?
I was unable to run Fallout 3 on my Win 7 machine. It would refuse to start. After checking various forums, it turns out I was just missing a specific Win 7 update, now it runs perfectly.
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