First of all thanks a lot for the help you have given me in this forum so far.
Now I have got a very serious (and quite urgent, since I wanted to start this experiment at the end of this week) problem.
I've written a program (nothing special, just a very long list of Likert scales) that starts without any problems. But after a while Inquisit crashes (frozen screen). When I look at the Inquisit script window (the right area - how is it called by the way?) I get the message "System Error 87" a number of times. This problem appears always at different points of the script, so I guess it is not a problem of an error in my script. And I replicated this error on three different machines, therefore it is unlikely that it is a problem of my computer.
Can you give me any help? As I told you, it is really urgent.