Dynare does work, but does not run my example

Hey, so I have installed Matlab and Dynare. When I type Dynare into command it does show me it’s installed and working, but whenever I run a simple example it shows me this error, or variations thereof, stating that preprocessing has failed. What could this be? Does someone have tips/suggestions to solve this?
Thanks a lot.

You are missing the model-block.

Oh yes, I added it and it works now. Thank you very much professor.

may i ask you how did you solve this problem, my problem seems like this.

You should provide your code to give specific advice.