Are they installed within your Poser 6 runtime? You will not generally be able to run scripts located in your Poser 5 directories from Poser 6.

What python error messages are you getting? If you high light the text then Ctrl+C you can copy the text.

Sometimes Poser "forgets" where it has installed its Python folder. If this is the case the error mesages will give some indication. The cure is to reinstall Poser 6 plus service releases.

Do any of the scripts have Poser 5 file paths hard coded into them? If so they may need to be edited.

Thats all I can think of off the top of my head :)