More software issues

In a spare break we had during the college hours we came to the media department to do some editing but unfortunately adobe premier pro decides to freeze every time we try to open any kind of footage, this is really frustrating us as a group now as this continues to happen every time and were running out of time to edit. We feel as though no software has 'played' the game right. I have had no contact from Tim for over a week now and I and us as a group are getting increasingly annoyed with our project. Rachel and I feel as though after a mishap from Tim he hasn’t shown the drive to repair our project and we are now aimless and not motivated.