You are right, sorry. It seems that the second part of my earlyer post went lost.
I go into alt-mode and via the function button, I choose a Script. I have tried the Interval-Script and HDR Script so far. I press "Menu" and on the lower left hand corner, the name of the Skript is shown. When i press the shutter, the script starts, but after one shot, it "freezes". It shows the picture taken and remains like that. It does not continue taking multiple photos. This i experience during both the HDR and the Interval scripts. When i press the Shutterresease again, the scripts stops.
So far, i was able to get some results by changing the "shoot" in the scripts into click "shoot_full".
But then, it seems to get confused with the timing. Sometimes, it takes only every second picture. So, while the couter displayed in the left corner counts to e.g 10, only five pictures are taken.
I hope this helps you understanding my problem.