So here's the thing : I'm editing on Vegas Pro 13, 25fps according to my origninal files. I just imported some sound I "mixed" externally. And now, my timeline acts in 24fps although my project is still in 25fps. I don't know if it has something to do with the files I imported but the ctrl Z option is dead now. I can't figure out what the problem is, it's the first time I see anything like that in Vegas. The timeline should act according to the project setting, right ? As shown in the screenshots bellow, I can't control every frame.