diff --git a/src/main/gui/net/sf/jailer/ui/DbConnectionDialog.java b/src/main/gui/net/sf/jailer/ui/DbConnectionDialog.java
index 6c09d2680..994fcd545 100644
--- a/src/main/gui/net/sf/jailer/ui/DbConnectionDialog.java
+++ b/src/main/gui/net/sf/jailer/ui/DbConnectionDialog.java
@@ -876,16 +876,20 @@ public class DbConnectionDialog extends javax.swing.JDialog {
 			}
 		});
 		if (connectionsTable != null) {
-			if (sci != null) {
-				int selectedRowIndex = connectionList.indexOf(sci);
-				if (selectedRowIndex >= 0) {
-					RowSorter<?> rowSorter = connectionsTable.getRowSorter();
-					selectedRowIndex = rowSorter.convertRowIndexToView(selectedRowIndex);
+			try {
+				if (sci != null) {
+					int selectedRowIndex = connectionList.indexOf(sci);
 					if (selectedRowIndex >= 0) {
-						connectionsTable.getSelectionModel().setSelectionInterval(selectedRowIndex, selectedRowIndex);
-						connectionsTable.scrollRectToVisible(connectionsTable.getCellRect(selectedRowIndex, 0, true));
+						RowSorter<?> rowSorter = connectionsTable.getRowSorter();
+						selectedRowIndex = rowSorter.convertRowIndexToView(selectedRowIndex);
+						if (selectedRowIndex >= 0) {
+							connectionsTable.getSelectionModel().setSelectionInterval(selectedRowIndex, selectedRowIndex);
+							connectionsTable.scrollRectToVisible(connectionsTable.getCellRect(selectedRowIndex, 0, true));
+						}
 					}
 				}
+			} catch (Exception e) {
+				// ignore
 			}
 		}
 	}
diff --git a/src/main/gui/net/sf/jailer/ui/ExtractionModelFrame.java b/src/main/gui/net/sf/jailer/ui/ExtractionModelFrame.java
index b511c656b..24b6be801 100644
--- a/src/main/gui/net/sf/jailer/ui/ExtractionModelFrame.java
+++ b/src/main/gui/net/sf/jailer/ui/ExtractionModelFrame.java
@@ -30,6 +30,7 @@ import java.io.FileNotFoundException;
 import java.io.FileReader;
 import java.io.IOException;
 import java.net.URI;
+import java.nio.charset.Charset;
 import java.nio.file.Files;
 import java.sql.SQLException;
 import java.text.SimpleDateFormat;
@@ -2151,7 +2152,7 @@ public class ExtractionModelFrame extends javax.swing.JFrame {
 			
 			extractionModelEditor.graphView.exportDisplayToImage(overviewImg, overviewHtml);
 			
-			renderer.setOverviewHtml(Files.readAllLines(overviewHtml.toPath()).stream().collect(Collectors.joining(UIUtil.LINE_SEPARATOR)));
+			renderer.setOverviewHtml(Files.readAllLines(overviewHtml.toPath(), Charset.defaultCharset()).stream().collect(Collectors.joining(UIUtil.LINE_SEPARATOR)));
 			openHTMLRender(null);
 			overviewHtml.delete();
 		} catch (Throwable e) {