It didn't.

If you are sure that these scripts worked in Poser 7 prior to to installing the service release we would need to backtrack and see the exact history of all that you did regarding your Poser 7 installation. For example I have known folks copy their entire Poser 6 runtime folder into their Poser 7 directory. This would include the now outdated Poser 6 version of Python. Exactly what would and would not work is going to be difficult to ascertain. Suffice to say that if you are only getting these error messages now it is because you have an up to date, correctly formatted Poser 7 installation and you will need to bring those scripts up to date too.