How can I fix this Simulink error "This function does not fully set the dimensions of output port 2"

I am trying to simulate two differential equations with the following model pictured below.

When trying to run the model, I get the error "This function does not fully set the dimensions of output port 2" for the function block f2.

All signal dimensions seem to be in order. Also there is no output port 2 for the function block in question so I really don't understand the error message.

How can I fix this? The file is attached.

Answer 1

[Jan Jeske]

I found the error. It was the way I used deal in the Matlab-Function blocks. Once I fixed this it worked.