AlertDialog causes java.lang.RuntimeException: Unable to instantiate activity ComponentInfo
===

I'm getting this error after clicking the AlertDialog box OK Button to Intent to the next activity, the data is still being inserted into the database but the application just crashes.

Logcat error:

    07-22 02:26:08.603: E/JSON(10170): {"tag":"register","success":1,"error":0,"uid":"500af44ea075b5.28543539","user":{"name":"Dddds","email":"Saasa","imei":"359616041330986","created_at":"2012-07-22 02:26:22","updated_at":null}}
    07-22 02:26:08.623: E/JSON(10170): {"uid":"500af44ea075b5.28543539","error":0,"user":{"created_at":"2012-07-22 02:26:22","updated_at":null,"email":"Saasa","imei":"359616041330986","name":"Dddds"},"success":1,"tag":"register"}
    07-22 02:26:08.758: D/dalvikvm(10170): GC_CONCURRENT freed 142K, 3% free 13469K/13831K, paused 7ms+2ms
    07-22 02:26:09.608: D/dalvikvm(10170): newInstance failed: p0 i0 [0 a1
    07-22 02:26:09.608: D/AndroidRuntime(10170): Shutting down VM
    07-22 02:26:09.608: W/dalvikvm(10170): threadid=1: thread exiting with uncaught exception (group=0x40c681f8)
    07-22 02:26:09.613: E/AndroidRuntime(10170): FATAL EXCEPTION: main
    07-22 02:26:09.613: E/AndroidRuntime(10170): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{nyp.android.project/nyp.android.project.DashboardActivity}: java.lang.InstantiationException: can't instantiate class nyp.android.project.DashboardActivity
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1891)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1992)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at android.app.ActivityThread.access$600(ActivityThread.java:127)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1158)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at android.os.Handler.dispatchMessage(Handler.java:99)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at android.os.Looper.loop(Looper.java:137)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at android.app.ActivityThread.main(ActivityThread.java:4511)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at java.lang.reflect.Method.invokeNative(Native Method)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at java.lang.reflect.Method.invoke(Method.java:511)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:980)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:747)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at dalvik.system.NativeStart.main(Native Method)
    07-22 02:26:09.613: E/AndroidRuntime(10170): Caused by: java.lang.InstantiationException: can't instantiate class nyp.android.project.DashboardActivity
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at java.lang.Class.newInstanceImpl(Native Method)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at java.lang.Class.newInstance(Class.java:1319)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at android.app.Instrumentation.newActivity(Instrumentation.java:1026)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1882)
    07-22 02:26:09.613: E/AndroidRuntime(10170): 	... 11 more
    07-22 02:26:59.308: I/Process(10170): Sending signal. PID: 10170 SIG: 9
    07-22 02:31:13.878: D/OpenGLRenderer(10938): Flushing caches (mode 0)
    07-22 02:31:15.773: D/dalvikvm(10938): GC_CONCURRENT freed 155K, 3% free 13114K/13511K, paused 2ms+2ms
    07-22 02:31:17.708: D/OpenGLRenderer(10938): Flushing caches (mode 0)
    07-22 02:31:26.963: E/JSON(10938): {"tag":"register","success":1,"error":0,"uid":"500af58d0aa288.05836094","user":{"name":"Test","email":"Test","imei":"359616041330986","created_at":"2012-07-22 02:31:41","updated_at":null}}
    07-22 02:31:26.968: E/JSON(10938): {"uid":"500af58d0aa288.05836094","error":0,"user":{"created_at":"2012-07-22 02:31:41","updated_at":null,"email":"Test","imei":"359616041330986","name":"Test"},"success":1,"tag":"register"}
    07-22 02:31:27.008: D/dalvikvm(10938): GC_FOR_ALLOC freed 214K, 3% free 13240K/13639K, paused 20ms
    07-22 02:31:28.468: D/dalvikvm(10938): newInstance failed: p0 i0 [0 a1
    07-22 02:31:28.468: D/AndroidRuntime(10938): Shutting down VM
    07-22 02:31:28.468: W/dalvikvm(10938): threadid=1: thread exiting with uncaught exception (group=0x40c681f8)
    07-22 02:31:28.473: E/AndroidRuntime(10938): FATAL EXCEPTION: main
    07-22 02:31:28.473: E/AndroidRuntime(10938): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{nyp.android.project/nyp.android.project.DashboardActivity}: java.lang.InstantiationException: can't instantiate class nyp.android.project.DashboardActivity
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1891)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1992)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at android.app.ActivityThread.access$600(ActivityThread.java:127)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1158)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at android.os.Handler.dispatchMessage(Handler.java:99)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at android.os.Looper.loop(Looper.java:137)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at android.app.ActivityThread.main(ActivityThread.java:4511)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at java.lang.reflect.Method.invokeNative(Native Method)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at java.lang.reflect.Method.invoke(Method.java:511)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:980)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:747)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at dalvik.system.NativeStart.main(Native Method)
    07-22 02:31:28.473: E/AndroidRuntime(10938): Caused by: java.lang.InstantiationException: can't instantiate class nyp.android.project.DashboardActivity
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at java.lang.Class.newInstanceImpl(Native Method)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at java.lang.Class.newInstance(Class.java:1319)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at android.app.Instrumentation.newActivity(Instrumentation.java:1026)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1882)
    07-22 02:31:28.473: E/AndroidRuntime(10938): 	... 11 more

Code:

				JSONObject json = userFunction.registerUser(name, email, password, IMEI.getText().toString());
				
				// check for login response
				try {
					if (json.getString(KEY_SUCCESS) != null) {
						registerErrorMsg.setText("");
						String res = json.getString(KEY_SUCCESS); 
						if(Integer.parseInt(res) == 1){
							// user successfully registered
							// Store user details in SQLite Database
							DatabaseHandler db = new DatabaseHandler(getApplicationContext());
							JSONObject json_user = json.getJSONObject("user");
							
					        AlertDialog alertDialog = new AlertDialog.Builder(RegisterActivity.this).create();

							// Setting Dialog Title
							alertDialog.setTitle("Registration");

							// Setting Dialog Message
							alertDialog.setMessage("Registration successful");

							// Setting Icon to Dialog
							alertDialog.setIcon(R.drawable.tick);
							
						    // Setting OK Button
					        alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
					                
					        public void onClick(DialogInterface dialog, int which) {
					        // Write your code here to execute after dialog closed
					        //Toast.makeText(getApplicationContext(), "You clicked on OK", Toast.LENGTH_SHORT).show();
					        
					        // Launch Dashboard Screen
							Intent dashboard = new Intent(getApplicationContext(), DashboardActivity.class);
								
							// Close all views before launching Dashboard
							dashboard.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
							startActivity(dashboard);
								
							// Close Registration Screen
							finish();
					
					        }
					        });
					 
					        // Showing Alert Message
					        alertDialog.show();		
					        
							// Clear all previous data in database
							userFunction.logoutUser(getApplicationContext());
							db.addUser(json_user.getString(KEY_NAME), json_user.getString(KEY_EMAIL), json.getString(KEY_UID), json_user.getString(KEY_CREATED_AT), json_user.getString(KEY_IMEI));						
							
						}else{
							// Error in registration
							registerErrorMsg.setText("Error occured in registration");
						}
					}
				} catch (JSONException e) {
					e.printStackTrace();
				}
			}
		});

