Delay restoring state of database header

src/databaseview.cpp

@@ -319,9 +319,12 @@ DataBaseView::DataBaseView(Database *database, QWidget *parent) : QWidget(parent
     m_model = new FITSFileModel(m_database, this);
 
     QSettings settings;
-    m_tableView->setModel(m_model);
     m_model->setColumns(settings.value("databaseview/selectedColumns", DEFAULT_COLUMNS).toStringList());
+    m_tableView->setModel(m_model);
+    QTimer::singleShot(200, [this](){
+        QSettings settings;
         m_tableView->horizontalHeader()->restoreState(settings.value("databaseview/header").toByteArray());
+    });
 
     QHBoxLayout *hlayout = new QHBoxLayout();
     layout->addLayout(hlayout);

src/mainwindow.cpp

@@ -576,6 +576,8 @@ void MainWindow::loadFile(const QString &path)
     if(!path.isEmpty())
     {
         QFileInfo info(path);
+        if(info.exists() && info.isReadable())
+        {
             m_ringList->setFile(info.canonicalFilePath());
             updateWindowTitle();
             if(info.isDir())
@@ -587,6 +589,11 @@ void MainWindow::loadFile(const QString &path)
             if(settings.value("settings/bestfit", false).toBool())
                 m_image->bestFit();
         }
+        else
+        {
+            qWarning() << "File doesn't exist or is not readable";
+        }
+    }
 }
 
 void MainWindow::loadFiles(const QStringList &paths)