yomomma

hi im trying to install sims 2 and when its installing i keep getting the same popup when its at 76%, and now after pressing enter a million times im now at 93 %, but it hasnt asked me to insert disc 3. its saying A problem occured when trying to transfer the file and so on. ive gotten to 100% before, but the same thing happens and it doenst quit quick responses are gladly appreciated. thanks.