Xcode 8 - Swift 3 OS X- Refresh custom View Controller - swift

Question

I am creating an application in Xcode 8 and Swift 3 for use at my place of employment. I am going to give you a brief understanding of what I am doing, and what I am attempting to do. So in my program I load data about the computer, including MAC address and IP Address, which I have working flawlessly. My issue is when I try to refresh the data, it either crashes or does not reload anything.
Now I have read the documentation that specifically says "Do not call viewDidLoad()" but I am not sure how else to reload the data. I have been working on this one little feature for a while, but unfortunately I am still coming up blank and cannot find much more information.
Basically I pull the information and then write them to labels which present the data to the technician. I have attempted to use the refresh function under the view controller, as well as the reload under the first response to no avail. Does anyone have any ideas that I can attempt to reload the data on button click?
Edit 2:
import Cocoa
import Foundation
import NetFS
class ViewController: NSViewController {
// Hostname outlet
#IBOutlet weak var populateHostname: NSTextField!
// IP Address 1 outlet
#IBOutlet weak var populateIPAddr: NSTextField!
#IBOutlet weak var IPAdap1: NSTextField!
// IP Address 2 outlet
#IBOutlet weak var populateIPAddr2: NSTextField!
#IBOutlet weak var IPAdap2: NSTextField!
// MAC Adress 1 outlet
#IBOutlet weak var populateMACAddress: NSTextField!
#IBOutlet weak var MACAdap1: NSTextField!
// MAC Address 2 outlet
#IBOutlet weak var populateMACAddress2: NSTextField!
#IBOutlet weak var MACAdap2: NSTextField!
// OS Version outlet
#IBOutlet weak var osVersion: NSTextField!
// Buttons
#IBOutlet weak var editLoginConfigButton: NSButton!
#IBAction func refresh(_ sender: AnyObject) {
//ViewController.setNeedsDisplay
reloadData()
}
#IBAction func EditLoginConfig(_ sender: AnyObject) {
*Omitted from code - for stackoverflow*
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
loadData()
}
func reloadData() {
//get adapters - includes IP, Adapter Name, and MAC Address
let myInterfaces = getInterfaces()
//ip address
if (myInterfaces.count != 0) {
populateIPAddr.stringValue = myInterfaces[0].addr
IPAdap1.stringValue = myInterfaces[0].name
if (myInterfaces.count != 1) {
if (myInterfaces[0].addr != myInterfaces[1].addr) {
populateIPAddr2.stringValue = myInterfaces[1].addr
IPAdap2.stringValue = myInterfaces[1].name
}
} else {
populateIPAddr2.stringValue = ""
IPAdap2.stringValue = ""
}
}
//mac address
if (myInterfaces.count != 0) {
populateMACAddress.stringValue = myInterfaces[0].mac
MACAdap1.stringValue = myInterfaces[0].name
if (myInterfaces.count != 1) {
if (myInterfaces[0].mac != myInterfaces[1].mac) {
populateMACAddress2.stringValue = myInterfaces[1].mac
MACAdap2.stringValue = myInterfaces[1].name
}
} else {
populateMACAddress2.stringValue = ""
MACAdap2.stringValue = ""
}
}
}
func loadData() {
//hostname
let currentHost = Host.current().localizedName ?? ""
populateHostname.stringValue = currentHost
//get adapters - includes IP, Adapter Name, and MAC Address
let myInterfaces = getInterfaces()
//ip address
if (myInterfaces.count != 0) {
populateIPAddr.stringValue = myInterfaces[0].addr
IPAdap1.stringValue = myInterfaces[0].name
if (myInterfaces.count != 1) {
if (myInterfaces[0].addr != myInterfaces[1].addr) {
populateIPAddr2.stringValue = myInterfaces[1].addr
IPAdap2.stringValue = myInterfaces[1].name
}
} else {
populateIPAddr2.stringValue = ""
IPAdap2.stringValue = ""
}
}
//mac address
if (myInterfaces.count != 0) {
populateMACAddress.stringValue = myInterfaces[0].mac
MACAdap1.stringValue = myInterfaces[0].name
if (myInterfaces.count != 1) {
if (myInterfaces[0].mac != myInterfaces[1].mac) {
populateMACAddress2.stringValue = myInterfaces[1].mac
MACAdap2.stringValue = myInterfaces[1].name
}
} else {
populateMACAddress2.stringValue = ""
MACAdap2.stringValue = ""
}
}
//OS X Version
let osVers = ProcessInfo.processInfo.operatingSystemVersion
let osMajorVers = String(osVers.majorVersion)
let osMinorVers = String(osVers.minorVersion)
let osPatchVers = String(osVers.patchVersion)
osVersion.stringValue = (osMajorVers + "." + osMinorVers + "." + osPatchVers)
// Edit Users Login Config enabled/disabled
if (NSUserName() == "Administrator" || NSUserName() == "administrator") {
// disable button
editLoginConfigButton.isEnabled = false
}
}
override var representedObject: AnyObject? {
didSet {
// Update the view, if already loaded.
}
}
}
So as I said before (I believe), using it like this does not break the thread, but it also does not refresh the data. Any idea where it is failing?