diff --git a/gui/scripts/alerts.js b/gui/scripts/alerts.js
index 27307f4..af414f9 100644
--- a/gui/scripts/alerts.js
+++ b/gui/scripts/alerts.js
@@ -3,35 +3,69 @@ Alert management system.
 */
 
 export default class alerts {
-  static confirm_action() {
-    let user_response = false;
+	static confirm_action() {
+		let user_response = false;
 
-    (async () => {
-      // Import the module.
-      let reader = (await import(chrome.runtime.getURL("gui/scripts/read.js")))[
-        `texts`
-      ];
+		(async () => {
+			// Import the module.
+			let reader = (await import(chrome.runtime.getURL("gui/scripts/read.js")))[
+				`texts`
+			];
 
-      // Get the user response.
-      user_response = confirm(
-        reader.localized(`GUI_alert_confirm_action_text`),
-      );
-    })();
-    // Return the user response.
-    return user_response;
-  }
+			// Get the user response.
+			user_response = confirm(
+				reader.localized(`GUI_alert_confirm_action_text`),
+			);
+		})();
+		// Return the user response.
+		return user_response;
+	}
 
-  static log(message) {
-    console.log(message);
-    try {
-      M.toast({ text: message });
-    } catch (err) {}
-  }
+	static log(message) {
+		console.log(message);
+		try {
+			M.toast({ text: message });
+		} catch (err) {}
+	}
 
-  static warn(message) {
-    console.warn(message);
-    try {
-      M.toast({ text: message });
-    } catch (err) {}
-  }
+	/*
+	Raise a warning. 
+
+	@param {boolean} message the message
+	@param {boolean} critical the critical nature
+	*/
+	static warn(message, critical = false) {
+		console.warn(message);
+	if (critical) {
+		alert(message);
+	} else {
+		try {
+			M.toast({ text: message });
+		} catch (err) {}
+	}
+	}
+	
+	/*
+	Raise an error message.
+
+	@param {number} ERROR_CODE the error code
+	@param {number} ERROR_MESSAGE the custom error message
+	@param {boolean} critical the critical nature
+	*/
+	static error(ERROR_CODE, ERROR_MESSAGE, critical = true) {
+		(async () => {
+			// Import the templating.
+			const texts = (await import(chrome.runtime.getURL("gui/scripts/read.js"))).default;
+
+			// Display the error message.
+			console.error(texts.localized(`error_msg`, null, [ERROR_CODE, ERROR_MESSAGE]));
+			if (critical) {
+				alert(texts.localized(`error_msg_GUI`, null, [String(ERROR_CODE)]));
+			} else {
+				try {
+					M.toast({ text: message });
+				} catch (err) {}
+			}
+		})();
+	}
 }