just installed daggerfall i prompt to play then after all the bethesda stuff "error 0 has occored" i then restarted dosbox and tried to run it again i get a CRITICAL error saying i must reinstall daggerfall path any help would be much appreciated

Re-download and reinstall Daggerfall. Don't get it from Bethesda's site. Google it, as there's more than one place that hosts the game, now.