Ok, first of all, the problem as stated before, is that you didn’t have any orc in the patch.
Second, you should always “write” a .sco according to a specific .orc, and vice-versa. So be really careful with your parameters, etc…
Now, you don’t have to “create” graphically an orchestra. It is much more practical in fact to type it.
So in this patch,
you can either use the “graphical” orchestra, or better connect the “text” orchestra to the second input of csound-synth.
Here is the attached patch:
You might encounter other problems, so don’t hesitate to submit them here.