i want to thank all of you for your concern and inform you that i tried to download the cf card in a pc (after attempting in 4 different mac and it worked!!!) All the data were downloaded! The second shot which was on the same card doesn't work, and i think, the reason is that the recording stopped because the card was full... all the data are there but i cannot either view or convert them...
thank you all once more
thank you all once more