install tutorial data for arcgis 10.2

I’ve installed ArcGIS 10.2 ok but can't get the other disk with tutorial data to install...i get the message:

'A version previous to ArcGIS 10.1 tutorial data exists on your machine. you must uninstall the previous version of arcgis tutorial data before installing arcgis 10.2 desktop tutorial data.'

i can't find a directory with that name so i can delete the previous version...