Return nil if archiving fails.

Clocker/Clocker/LocationController.swift

@@ -80,7 +80,9 @@ class LocationController: NSObject {
         var datas: [Data] = []
 
         for updatedObject in timezoneObjects {
-            let dataObject = NSKeyedArchiver.clocker_archive(with: updatedObject)
+            guard let dataObject = NSKeyedArchiver.clocker_archive(with: updatedObject) else {
+                continue
+            }
             datas.append(dataObject)
         }
 

Clocker/Overall App/DataStore.swift

@@ -128,7 +128,9 @@ class DataStore: NSObject {
     }
 
     func addTimezone(_ timezone: TimezoneData) {
-        let encodedTimezone = NSKeyedArchiver.clocker_archive(with: timezone)
+        guard let encodedTimezone = NSKeyedArchiver.clocker_archive(with: timezone) else {
+            return
+        }
 
         var defaults: [Data] = timezones()
         defaults.append(encodedTimezone)

Clocker/Overall App/Foundation + Additions.swift

@@ -58,7 +58,7 @@ public extension Data {
 }
 
 extension NSKeyedArchiver {
-    static func clocker_archive(with object: Any) -> Data {
+    static func clocker_archive(with object: Any) -> Data? {
         
         if #available(macOS 10.14, *) {
             return try! NSKeyedArchiver.archivedData(withRootObject: object, requiringSecureCoding: true)
@@ -67,5 +67,7 @@ extension NSKeyedArchiver {
         if #available(macOS 10.13, *) {
             return NSKeyedArchiver.archivedData(withRootObject: object)
         }
+        
+        return nil
     }
 }

Clocker/Panel/Data Layer/TimezoneDataOperations.swift

@@ -421,7 +421,9 @@ extension TimezoneDataOperations {
 
     func saveObject(at index: Int = -1) {
         var defaults = store.timezones()
-        let encodedObject = NSKeyedArchiver.clocker_archive(with:dataObject as Any)
+        guard let encodedObject = NSKeyedArchiver.clocker_archive(with:dataObject as Any) else {
+            return
+        }
         index == -1 ? defaults.append(encodedObject) : defaults.insert(encodedObject, at: index)
         store.setTimezones(defaults)
     }

Clocker/Panel/Notes Popover/NotesPopover.swift

@@ -315,8 +315,9 @@ class NotesPopover: NSViewController {
     }
 
     private func insertTimezoneInDefaultPreferences() {
-        guard let model = dataObject, var timezones = timezoneObjects else { return }
+        guard let model = dataObject, var timezones = timezoneObjects,
-        let encodedObject = NSKeyedArchiver.clocker_archive(with:model)
+        let encodedObject = NSKeyedArchiver.clocker_archive(with:model) else { return }
+        
         timezones[currentRow] = encodedObject
         DataStore.shared().setTimezones(timezones)
     }
@@ -341,7 +342,9 @@ class NotesPopover: NSViewController {
         var datas: [Data] = []
 
         for updatedObject in timezoneObjects {
-            let dataObject = NSKeyedArchiver.clocker_archive(with: updatedObject)
+            guard let dataObject = NSKeyedArchiver.clocker_archive(with: updatedObject) else {
+                continue
+            }
             datas.append(dataObject)
         }
 

Clocker/Panel/ParentPanelController.swift

@@ -285,7 +285,9 @@ class ParentPanelController: NSWindowController {
         var datas: [Data] = []
 
         for updatedObject in timezoneObjects {
-            let dataObject = NSKeyedArchiver.clocker_archive(with: updatedObject)
+            guard let dataObject = NSKeyedArchiver.clocker_archive(with: updatedObject) else {
+                continue
+            }
             datas.append(dataObject)
         }
 

Clocker/Preferences/General/PreferencesDataSource.swift

@@ -184,7 +184,9 @@ extension PreferencesDataSource: NSTableViewDataSource {
     }
 
     private func insert(timezone: TimezoneData, at index: Int) {
-        let encodedObject = NSKeyedArchiver.clocker_archive(with: timezone)
+        guard let encodedObject = NSKeyedArchiver.clocker_archive(with: timezone) else {
+            return
+        }
         var newDefaults = selectedTimezones
         newDefaults[index] = encodedObject
         store.setTimezones(newDefaults)

Clocker/Preferences/General/PreferencesViewController.swift

@@ -977,7 +977,9 @@ extension PreferencesViewController: SRRecorderControlDelegate {}
 // Helpers
 extension PreferencesViewController {
     private func insert(timezone: TimezoneData, at index: Int) {
-        let encodedObject = NSKeyedArchiver.clocker_archive(with: timezone)
+        guard let encodedObject = NSKeyedArchiver.clocker_archive(with: timezone) else {
+            return
+        }
         var newDefaults = selectedTimeZones
         newDefaults[index] = encodedObject
         DataStore.shared().setTimezones(newDefaults)