diff --git a/src/java/com/javadeobfuscator/deobfuscator/ui/SwingWindow.java b/src/java/com/javadeobfuscator/deobfuscator/ui/SwingWindow.java
index 875a314..8c760da 100644
--- a/src/java/com/javadeobfuscator/deobfuscator/ui/SwingWindow.java
+++ b/src/java/com/javadeobfuscator/deobfuscator/ui/SwingWindow.java
@@ -30,6 +30,7 @@
 import com.javadeobfuscator.deobfuscator.ui.wrap.WrapperFactory;
 
 import java.awt.GridBagLayout;
+import java.awt.Dimension;
 import java.awt.GridBagConstraints;
 import java.awt.Insets;
 import java.awt.Toolkit;
@@ -869,6 +870,9 @@ public void run()
 							PrintWriter writer = new PrintWriter(stringWriter);
 							e.printStackTrace(writer);
 							textPane.setText(stringWriter.toString());
+							Toolkit toolkit = Toolkit.getDefaultToolkit();
+							Dimension screenSize = toolkit.getScreenSize();
+							newFrame.setLocation((screenSize.width - newFrame.getWidth()) / 2, (screenSize.height - newFrame.getHeight()) / 2);
 							newFrame.setVisible(true);
 						}
 						deob.clearClasses();
diff --git a/src/java/com/javadeobfuscator/deobfuscator/ui/wrap/WrapperFactory.java b/src/java/com/javadeobfuscator/deobfuscator/ui/wrap/WrapperFactory.java
index d372ddd..51fffff 100644
--- a/src/java/com/javadeobfuscator/deobfuscator/ui/wrap/WrapperFactory.java
+++ b/src/java/com/javadeobfuscator/deobfuscator/ui/wrap/WrapperFactory.java
@@ -103,6 +103,23 @@ private static ByteLoader iter(File dir, boolean recurse) {
 		if (files == null) {
 			return null;
 		}
+		// check for common names
+		File deobfuscator = new File(dir, "deobfuscator.jar");
+		File deobfuscator100 = new File(dir, "deobfuscator-1.0.0.jar");
+		if(deobfuscator.exists())
+			try {
+				ByteLoader v = fromJar(deobfuscator);
+				if (v != null) {
+					return v;
+				}
+			} catch (IOException e) {} catch (InvalidJarException e) {}
+		if(deobfuscator100.exists())
+			try {
+				ByteLoader v = fromJar(deobfuscator100);
+				if (v != null) {
+					return v;
+				}
+			} catch (IOException e) {} catch (InvalidJarException e) {}
 		for (File file : files) {
 			// check sub-dirs
 			if (recurse && file.isDirectory()) {