diff --git a/pom.xml b/pom.xml
index add617a..0411e5d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>Limbo</groupId>
 	<artifactId>Limbo</artifactId>
-	<version>0.2.2-ALPHA</version>
+	<version>0.2.3-ALPHA</version>
 	<build>
 		<sourceDirectory>src</sourceDirectory>
 		<resources>
@@ -91,4 +91,4 @@
 		<maven.compiler.target>1.8</maven.compiler.target>
 	</properties>
 
-</project>
+</project>
\ No newline at end of file
diff --git a/src/com/loohp/limbo/DeclareCommands.java b/src/com/loohp/limbo/DeclareCommands.java
index c2553f6..6d63c28 100644
--- a/src/com/loohp/limbo/DeclareCommands.java
+++ b/src/com/loohp/limbo/DeclareCommands.java
@@ -2,6 +2,7 @@ package com.loohp.limbo;
 
 import java.io.ByteArrayOutputStream;
 import java.io.DataOutputStream;
+import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.util.List;
 
@@ -11,7 +12,7 @@ import com.loohp.limbo.Utils.DataTypeIO;
 
 public class DeclareCommands {
 	
-	public static PacketPlayOutDeclareCommands getDeclareCommandsPacket(CommandSender sender) throws Exception {
+	public static PacketPlayOutDeclareCommands getDeclareCommandsPacket(CommandSender sender) throws IOException {
 		List<String> commands = Limbo.getInstance().getPluginManager().getTabOptions(sender, new String[0]);
 		
 		if (commands.isEmpty()) {
diff --git a/src/com/loohp/limbo/Permissions/PermissionsManager.java b/src/com/loohp/limbo/Permissions/PermissionsManager.java
index 0378bda..724f87e 100644
--- a/src/com/loohp/limbo/Permissions/PermissionsManager.java
+++ b/src/com/loohp/limbo/Permissions/PermissionsManager.java
@@ -25,18 +25,23 @@ public class PermissionsManager {
 	@SuppressWarnings("unchecked")
 	public void loadDefaultPermissionFile(File file) throws FileNotFoundException {
 		FileConfiguration config = new FileConfiguration(file);
-		for (Object obj : config.get("groups", Map.class).keySet()) {
-			String key = (String) obj;
-			List<String> nodes = new ArrayList<>();
-			nodes.addAll(config.get("groups." + key, List.class));
-			permissions.put(key, nodes);
-		}
-		for (Object obj : config.get("players", Map.class).keySet()) {
-			String key = (String) obj;
-			List<String> groups = new ArrayList<>();
-			groups.addAll(config.get("players." + key, List.class));
-			users.put(key, groups);
-		}
+		permissions.put("default", new ArrayList<>());
+		try {
+			for (Object obj : config.get("groups", Map.class).keySet()) {
+				String key = (String) obj;
+				List<String> nodes = new ArrayList<>();
+				nodes.addAll(config.get("groups." + key, List.class));
+				permissions.put(key, nodes);
+			}
+		} catch (Exception e) {}
+		try {
+			for (Object obj : config.get("players", Map.class).keySet()) {
+				String key = (String) obj;
+				List<String> groups = new ArrayList<>();
+				groups.addAll(config.get("players." + key, List.class));
+				users.put(key, groups);
+			}
+		} catch (Exception e) {}
 	}
 	
 	public boolean hasPermission(CommandSender sender, String permission) {
@@ -44,7 +49,7 @@ public class PermissionsManager {
 			return true;
 		} else if (sender instanceof Player) {
 			Player player = (Player) sender;
-			if (users.get(player.getName()).stream().anyMatch(each -> permissions.get(each).stream().anyMatch(node -> node.equalsIgnoreCase(permission)))) {
+			if (users.get(player.getName()) != null && users.get(player.getName()).stream().anyMatch(each -> permissions.get(each).stream().anyMatch(node -> node.equalsIgnoreCase(permission)))) {
 				return true;
 			} else {
 				return permissions.get("default").stream().anyMatch(node -> node.equalsIgnoreCase(permission));
diff --git a/src/com/loohp/limbo/Plugins/PluginManager.java b/src/com/loohp/limbo/Plugins/PluginManager.java
index b52e1a7..3882008 100644
--- a/src/com/loohp/limbo/Plugins/PluginManager.java
+++ b/src/com/loohp/limbo/Plugins/PluginManager.java
@@ -94,14 +94,14 @@ public class PluginManager {
 		}
 	}
 
-	public List<String> getTabOptions(CommandSender sender, String[] args) throws Exception {
+	public List<String> getTabOptions(CommandSender sender, String[] args) {
 		List<String> options = new ArrayList<>();
 		for (Executor entry : executors) {
 			if (entry.tab.isPresent()) {
 				try {
 					options.addAll(entry.tab.get().tabComplete(sender, args));
 				} catch (Exception e) {
-					System.err.println("Error while passing tab completion \"" + args[0] + "\" to the plugin \"" + entry.plugin.getName() + "\"");
+					System.err.println("Error while passing tab completion to the plugin \"" + entry.plugin.getName() + "\"");
 					e.printStackTrace();
 				}
 			}