Please Help. Any click on menu throwing error.

[fiveowlz]

I installed a module (Attribute Wizard Pro), correctly installed the files, and everything was fine. Until I go to my shop front. When clicking on any menu item, I get a white screen with the following text: /* Do not replace this file. Just put this function bellow other functions. */
public function getInstructions() {
if (isset($this->product['instructions'])) { return $this->product['instructions'];
}
return array(); }

Does anyone know how to fix this? I don't know PHP code, and the developer hasn't replied.