Well give me some info what type of install and place your url. If you follow the advise we post about what to do when seeking support this goes alot faster.
I have tested most types and if you reall uploaded the templates you should be fine but that is if all your templates are being uploaded. Old templates will not work with the new version.
Yes the templates are so changed in the Pro 8 or Classifieds 5 series this is the reason I suggest on the release notes to delete your stylesheets and templates folders online before uploading the new code.
Have had lots of my threads over the past months with people and old templates or styles trying to use them with the new code.