Hmmmm I get a different error, namely that there's no setup(), which is because your contractor 
gave you a sketch with no setup().
If I put this line in:
void setup(){}
... it at least compiles. But an empty setup() won't be correct since it needs pinModes() at least to set the leds to outputs.
Post the actual code you can't compile. (edit: do you actually have voidloop writeen like that with no space, not void loop?)