Name must contain a single string

I have an error when i run a block diagram in simulink: Error evaluating 'StopFcn' of block_diagram 'bpsk1'. Name must contain a single string. Anyone can help me how can i resolve this?

[Walter Roberson]

If you fetch the StopFcn property of that diagram, then what shows up?

[Mehdi Mch]

In ribbon 'Callbacks' in 'Model properties' shows up 'bertool(stopped)'

Answer 1

[Walter Roberson]

See https://www.mathworks.com/matlabcentral/answers/349442-how-to-solve-the-stopfcn-error-when-the-cause-is-vectors-must-be-the-same-length#comment_801279 -- you will need to manually set that properly and then save the model.