This may occur in some cases if you create a variable with the same name as your file.
Once the variable is created and exists in your workspace, it becomes a matter of shadowing. When you press the 'Run' button, MATLAB essentially pastes the name of your script into the command window. This means that if you have a variable of the same name, MATLAB will only print out the value of this variable but will not execute the script.
To work around this issue, you can simply rename your file or your variable.
