HELP! MEDIABAY PROBLEMS?? CB5

Hi, I suddenly have a problem loading samples in my workspace. Usually cubase does automatically timestrech the samples into the range I use. Usually this is 2 bars. Now it does not timestretch anymore and it changes pitch for some reason. Did I press some buttom?? It’s really annoying because when I load a previous project there is no problem at all. Can anyone tell me what I need to do??

Thanks a LOT!!
Cheers Gordon!