diff --git a/mainwindow.cpp b/mainwindow.cpp
index 063683c..5c35218 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -2,10 +2,12 @@
 #include "ui_mainwindow.h"
 #include "firstdialog.h"
 
+#include "QDir"
+
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
-    ui(new Ui::MainWindow),
-    settings(new QSettings)
+    settings(new QSettings),
+    ui(new Ui::MainWindow)
 {
     // Check if this first run
     if (! settings->value("internal/isConfigured").toBool()) {
@@ -27,6 +29,16 @@ MainWindow::MainWindow(QWidget *parent) :
     // Disable context menu
     ui->webView->setContextMenuPolicy(Qt::CustomContextMenu);
 
+    foreach(QString key, settings->allKeys())
+    {
+        if (key.right(4) == ".mod")
+        {
+            QDir dir(settings->value("userOptions/pathConfig").toString() + "mod/");
+            if(!dir.exists(key))
+                settings->remove(key);
+        }
+    }
+
     foreach(QString modName, listFiles(settings->value("userOptions/pathConfig").toString() + "mod/", "*.mod"))
     {
         QString modIniName = extractName(settings->value("userOptions/pathConfig").toString() + "/mod/", modName);
@@ -92,9 +104,11 @@ void MainWindow::loadStyles()
     icon.addFile(launcherPath+"logo.ico", QSize(), QIcon::Normal, QIcon::Off);
     setWindowIcon(icon);
 
-    ui->widget->setStyleSheet("background-image: url("+launcherPath+"background.jpg);");
-    ui->buttonRegister->setStyleSheet("background-image: url("+launcherPath+"button_small.jpg);border-width: 1px;");
-    ui->buttonRun->setStyleSheet("background-image: url("+launcherPath+"button_big.jpg);border-width: 1px;");
+    ui->widget->setStyleSheet(
+        "#widget { background-image: url("+launcherPath+"background.jpg); }"
+        "#buttonRegister { background-image: url("+launcherPath+"button_small.jpg);border-width: 1px; }"
+        "#buttonRun { background-image: url("+launcherPath+"button_big.jpg);border-width: 1px; }"
+    );
 }
 
 
@@ -129,8 +143,11 @@ void MainWindow::buttonClickedRegister()
 
 void MainWindow::buttonClickedRun()
 {
+    execPath = settings->value("userOptions/pathGame").toString()+settings->value("internal/executableName").toString();
+
     QStringList arguments;
     QStringList keysList = settings->allKeys();
+
     foreach(QString key, keysList) {
         if (key.right(4) == ".mod" && settings->value(key) == Qt::Checked) {
             arguments << "-mod=mod/" + key;
@@ -141,11 +158,32 @@ void MainWindow::buttonClickedRun()
     }
 
     QProcess *gameProcess = new QProcess();
-    gameProcess->start(
-        settings->value("userOptions/pathGame").toString()+settings->value("internal/executableName").toString(),
-        arguments);
+    connect(gameProcess, SIGNAL(started()), SLOT(gameStarted()));
+    connect(gameProcess, SIGNAL(error(QProcess::ProcessError)), SLOT(gameError()));
+    gameProcess->start(execPath, arguments);
     gameProcess->closeWriteChannel();
+}
+
+void MainWindow::gameError()
+{
+    QProcess *gameProcess = qobject_cast<QProcess *>(sender());
+    QMessageBox error(this);
+    QPushButton *configure = error.addButton(tr("Configure..."), QMessageBox::RejectRole);
+    QPushButton *ok = error.addButton(tr("OK"), QMessageBox::AcceptRole);
+    error.setDefaultButton(ok);
+    error.setEscapeButton(ok);
+    error.setWindowTitle(tr("Crusader Kings 2"));
+    error.setText(tr("Failed to start %1: %2").arg(execPath, gameProcess->errorString()));
+    error.setIcon(QMessageBox::Critical);
+    error.exec();
+    if (error.clickedButton() == configure) {
+        FirstDialog dialog(this);
+        dialog.exec();
+    }
+}
 
+void MainWindow::gameStarted()
+{
     // Quit after CK2 running
     QApplication::quit();
 }
diff --git a/mainwindow.h b/mainwindow.h
index 237f743..d79f260 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -41,6 +41,7 @@ class MainWindow : public QMainWindow
 
 private:
     Ui::MainWindow *ui;
+    QString     execPath;
     QStringList listFiles(QString directory, QString extension);
     QString     extractName(QString iniDir, QString iniName);
     void        loadStyles();
@@ -50,6 +51,8 @@ private slots:
     void        buttonClickedRegister();
     void        buttonClickedRun();
     void        webviewLoadFinished(bool status);
+    void        gameStarted();
+    void        gameError();
 };
 
 #endif // MAINWINDOW_H
diff --git a/mainwindow.ui b/mainwindow.ui
index 95df98b..0b5d7b8 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -135,10 +135,7 @@
       </rect>
      </property>
      <property name="autoFillBackground">
-      <bool>false</bool>
-     </property>
-     <property name="styleSheet">
-      <string notr="true">selection-background-color: rgb(255, 255, 255);</string>
+      <bool>true</bool>
      </property>
     </widget>
     <widget class="QPushButton" name="buttonRegister">