Getting the error "is inaccessible due to it's protection level" when I have the function set to public.

So I'm working with Wwise and I've followed what's in the Wwise documentation to make the following script:

 using UnityEngine;
 using System;
 using System.Collections;
 
 public class ScratchPad : MonoBehaviour {
     void Update() {
         if (Input.GetButtonDown("Fire12"))
     
 
             GetComponent<AkTriggerOnKeyPress>().Keypress();
         
     }
 }

That script is meant to work with:

 #if ! (UNITY_DASHBOARD_WIDGET || UNITY_WEBPLAYER || UNITY_WII || UNITY_NACL || UNITY_FLASH || UNITY_BLACKBERRY) // Disable under unsupported platforms.
 //////////////////////////////////////////////////////////////////////
 //
 // Copyright (c) 2014 Audiokinetic Inc. / All Rights Reserved
 //
 //////////////////////////////////////////////////////////////////////
 using UnityEngine;
 using System;
 using System.Collections;
 
 public class AkTriggerOnKeyPress : AkTriggerBase
 {
     void Keypress()
     {
         if(triggerDelegate != null) 
         {
             triggerDelegate(null);
         }
     }
 }

Any help on this would be appreciated, I am completely stumped as to why my script (top) is having this issue.