diff --git a/src/main/java/cn/reddragon/eportal/config/ConfigManager.java b/src/main/java/cn/reddragon/eportal/config/ConfigManager.java
index 28b2c85..6989c5c 100644
--- a/src/main/java/cn/reddragon/eportal/config/ConfigManager.java
+++ b/src/main/java/cn/reddragon/eportal/config/ConfigManager.java
@@ -48,18 +48,27 @@ public static void loadConfigs() {
                         alert.setContentText("配置文件版本过旧! 这可能导致配置加载错误. 由于软件会在退出时保存配置文件, 请考虑在软件退出前备份旧版配置文件.");
                         alert.showAndWait();
                     }
-                    for (AbstractConfig config : configs) {
-                        if (config.name.equals(next.getKey())) {
-                            config.fromJson(next.getValue());
-                            logger.info("成功加载配置文件 {}.", config.name);
-                            break;
+                    AbstractConfig config = null;
+                    try {
+                        for (AbstractConfig abstractConfig : configs) {
+                            config = abstractConfig;
+                            if (config.name.equals(next.getKey())) {
+                                config.fromJson(next.getValue());
+                                logger.info("成功加载配置文件 {}.", config.name);
+                                break;
+                            }
                         }
+                    } catch (Exception e) {
+                        logger.error("加载配置文件 {} 时发生错误!", config.name);
+                        logger.error(e);
                     }
                 }
             } else {
                 logger.warn("配置文件损坏!");
             }
         } catch (FileNotFoundException e) {
+            logger.error("无法加载配置文件!");
+            logger.error(e);
             throw new RuntimeException(e);
         }
     }
diff --git a/src/main/java/cn/reddragon/eportal/config/configs/AccountConfig.java b/src/main/java/cn/reddragon/eportal/config/configs/AccountConfig.java
index 1623f21..518a165 100644
--- a/src/main/java/cn/reddragon/eportal/config/configs/AccountConfig.java
+++ b/src/main/java/cn/reddragon/eportal/config/configs/AccountConfig.java
@@ -9,7 +9,8 @@
 import com.google.gson.JsonObject;
 
 public class AccountConfig extends AbstractConfig {
-    public static int index;
+    public static int index = -1;
+
     public AccountConfig() {
         super("Account");
     }
diff --git a/src/main/java/cn/reddragon/eportal/config/configs/NetTypeConfig.java b/src/main/java/cn/reddragon/eportal/config/configs/NetTypeConfig.java
index b15456d..abda053 100644
--- a/src/main/java/cn/reddragon/eportal/config/configs/NetTypeConfig.java
+++ b/src/main/java/cn/reddragon/eportal/config/configs/NetTypeConfig.java
@@ -6,7 +6,7 @@
 import com.google.gson.JsonPrimitive;
 
 public class NetTypeConfig extends AbstractConfig {
-    public static int index;
+    public static int index = -1;
 
     public NetTypeConfig() {
         super("NetType");
diff --git a/src/main/java/cn/reddragon/eportal/window/MainWindow.java b/src/main/java/cn/reddragon/eportal/window/MainWindow.java
index d00d7ab..ff09ae1 100644
--- a/src/main/java/cn/reddragon/eportal/window/MainWindow.java
+++ b/src/main/java/cn/reddragon/eportal/window/MainWindow.java
@@ -78,7 +78,7 @@ public void start(Stage stage) throws IOException {
             box.setValue(box.getItems().get(NetTypeConfig.index));
         else
             box.setValue("");
-        if (AccountConfig.index < AccountManager.accounts.size())
+        if (AccountConfig.index < AccountManager.accounts.size() && AccountConfig.index != -1)
             box2.setValue(box2.getItems().get(AccountConfig.index));
         /*
         TextField name = (TextField) root.lookup("#userNameField");