Trouble with audio

ive been recording with friends who use cubas artist 7. when i open the file in my cubase elements 7 all the tracks come up but without any audio. anyone else had this problem? any ideas on how to sort it out? any feedback would be very much appreciated.

Thanks, Ryan

Possibly a routing problem.

Make sure you have the correct interface selected, there is a correct stereo out in vst connections and all tracks are routed to the stereo out…maybe de-route and reassign them to your stereo out to be sure.