Add a catch for an error case

An error seems to happen for some persons. And they won't see it, cause its only in console. Now this error will cause a popup to happen.
Additional debug-information has been added to console.

pom.xml

@@ -5,7 +5,7 @@
 
 	<groupId>de.ecconia.scrapmechanicmapper</groupId>
 	<artifactId>ScrapMechanicMapper</artifactId>
-	<version>1</version>
+	<version>1.1</version>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

src/main/java/de/ecconia/scrapmechanicmapper/AddressToPosition.java

@@ -1,6 +1,7 @@
 package de.ecconia.scrapmechanicmapper;
 
 import de.ecconia.scrapmechanicmapper.accessor.ProcessWrapper;
+import javax.swing.JOptionPane;
 
 public class AddressToPosition extends Thread
 {
@@ -24,22 +25,38 @@ public AddressToPosition(long addressA, long addressB, PositionReceiver receiver
 	@Override
 	public void run()
 	{
-		System.out.println("Started update thread.");
-		while(!isInterrupted())
+		try
 		{
-			float a = process.readFloat(addressA);
-			float b = process.readFloat(addressB);
-			receiver.updatePosition(a, b);
-
-			try
+			System.out.println("Started update thread.");
+			while(!isInterrupted())
 			{
-				Thread.sleep(500);
+				float a = process.readFloat(addressA);
+				float b = process.readFloat(addressB);
+				receiver.updatePosition(a, b);
+
+				try
+				{
+					Thread.sleep(500);
+				}
+				catch(InterruptedException e)
+				{
+					break;
+				}
 			}
-			catch(InterruptedException e)
+		}
+		catch(Error e)
+		{
+			if(e.getMessage().equals("Invalid memory access"))
 			{
-				break;
+				System.out.println("Cannot access it.");
+				JOptionPane.showMessageDialog(null, "Cannot read from that address. Start with console and report to developer.");
+			}
+			else
+			{
+				throw e;
 			}
 		}
+
 		System.out.println("Stopped updated thread.");
 	}
 

src/main/java/de/ecconia/scrapmechanicmapper/accessor/ProcessWrapper.java

@@ -17,13 +17,15 @@ public class ProcessWrapper
 	public ProcessWrapper(String name)
 	{
 		int pid = getProcessId(name);
+		System.out.println("Pid is: " + pid);
 		if(pid == 0)
 		{
 			System.err.println("Could not find process.");
 			System.exit(1);
 		}
 
 		process = openProcess(PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_VM_OPERATION | PROCESS_QUERY_INFORMATION, pid);
+		System.out.println("Process val: " + process);
 	}
 
 	public String getProcessImageFileName()