"You don't say what to do with..." should include procedure name.

[jasonsikes]

to f1
repeat 5[if repcount = 3 [2*2]]
end
f1

Error message should be:

You don't say what to do with 4  in f1
[repeat 5 [if repcount = 3 [2*2]]]

[jasonsikes]

This also happens with much simpler functions

to f1
2*2
end
f1
You don't say what to do with 4