how comes the error: FileNotFoundException /proc/mtprof/status occurs?

Question

Sudden out of nowhere the error below comes up whenever I start my activity. this is the complete logcat: http://pastebin.com/Qdz2BCp4

This is my MainActivity in which the error occurs:

public class MainActivity extends FragmentActivity {
private DataSource _dataSource;

private Spinner _spinner1, _spinner2;

private int _category;

private double _inch;

private List<String> _categoryList = new ArrayList<String>();

private List<String> _sizes = new ArrayList<String>();
private ArrayAdapter<String> _dataAdapter;

private ArrayAdapter<String> _sizesAdapter;

private String _size;

public static User _user = null;

private boolean _inAccountDetails = false;

public final static String EXTRA_MESSAGE = "com.OBO.Bandenanalyse.Soort";

public final static String EXTRA_MESSAGE2 = "com.OBO.Bandenanalyse.Inch";

public final static String EXTRA_MESSAGE3 = "com.OBO.Bandenanalyse.Maat";

public final static String EXTRA_MESSAGE5 = "com.OBO.Bandenanalyse.User";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if(savedInstanceState != null && savedInstanceState.getBoolean("Layout")){
        setContentView(R.layout.registration_edit);
        initializeAccountDetails((User) savedInstanceState.getSerializable(EXTRA_MESSAGE5));
        _inAccountDetails = true;
    }else{
        String sql = "SELECT * FROM User";
        createFile();
        if(_dataSource.DbHelper._database != null){
            _dataSource.open();
            Cursor cursor = _dataSource.DbHelper._database.rawQuery(sql,null);                          
            cursor.moveToFirst();
            _dataSource.close();
            if(cursor.getCount() == 0){
                setContentView(R.layout.registration);
                createFile();
            } else {
                setContentView(R.layout.activity_main);
                addListenerOnSpinnerItemSelection();
                addListenerOnSpinner2ItemSelection();
                createFile();
                _user = getUser();
            }
            cursor.close();
        }
    }
}

@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
  super.onSaveInstanceState(savedInstanceState);
  savedInstanceState.putBoolean("Layout", _inAccountDetails);
  savedInstanceState.putSerializable(EXTRA_MESSAGE5, (Serializable) _user);
}

@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
  super.onRestoreInstanceState(savedInstanceState);  
  savedInstanceState.getBoolean("Layout");
  _user = (User) savedInstanceState.getSerializable(EXTRA_MESSAGE5);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
        case R.id.account_manager:
            setContentView(R.layout.registration_edit);
            initializeAccountDetails(_user);
            _inAccountDetails = true;
            return true;
        case R.id.delete_account:
            new DeleteDialogFragment().show(getSupportFragmentManager(), "Dialog");
            return true;

        default:
            return super.onOptionsItemSelected(item);
    }
}

private void initializeAccountDetails(User user){
    try{
        EditText editText1 = (EditText) findViewById(R.id.editText1);
        editText1.setText(user.getFirstName());

        EditText editText2 = (EditText) findViewById(R.id.EditText01);
        editText2.setText(user.getSurname());

        EditText editText3 = (EditText) findViewById(R.id.EditText02);
        editText3.setText(user.getEmail());

        EditText editText4 = (EditText) findViewById(R.id.EditText03);
        editText4.setText(user.getPostalCode());

        EditText editText5 = (EditText) findViewById(R.id.EditText04);
        editText5.setText(user.getHouseNumber());
    } catch(NullPointerException e){
        Toast.makeText(this, getString(R.string.noAccountRegistered), Toast.LENGTH_LONG).show();
    }
}
private boolean RetrieveInfo(){
    String email, voornaam, achternaam, postalCode, housenumber;

    EditText emailTxt = (EditText) findViewById(R.id.EditText02);
    EditText voornaamTxt = (EditText) findViewById(R.id.editText1);
    EditText achternaamTxt = (EditText) findViewById(R.id.EditText01);
    EditText postalCodeTxt = (EditText) findViewById(R.id.EditText03);
    EditText housenumberTxt = (EditText) findViewById(R.id.EditText04);

    if(!emailTxt.getText().toString().matches("") && !voornaamTxt.getText().toString().matches("") 
            && !achternaamTxt.getText().toString().matches("") && !postalCodeTxt.getText().toString().matches("") 
            && !housenumberTxt.getText().toString().matches("")){
        email = emailTxt.getText().toString();      
        voornaam = voornaamTxt.getText().toString();        
        achternaam = achternaamTxt.getText().toString();        
        postalCode = postalCodeTxt.getText().toString();        
        housenumber = housenumberTxt.getText().toString();
        _user = null;
        _user = new User(email,voornaam,achternaam,postalCode,housenumber);
        return true;
    } else {
        return false;
    }
}

private static final String EMAIL_PATTERN = 
        "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
        + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";

private boolean CheckInfo(){
    Pattern pattern = Pattern.compile(EMAIL_PATTERN);

    EditText emailTxt = (EditText) findViewById(R.id.EditText02);
    Debug.out(emailTxt.getText().toString());
    if(pattern.matcher(emailTxt.getText().toString()).matches()){
        return true;
    } else {
        Toast.makeText(getApplicationContext(), getString(R.string.noValidEmail), Toast.LENGTH_LONG).show();
        return false;
    }
}

public void toApplicationEdit(View view){
    if(CheckInfo()){
        if(RetrieveInfo()){
            Intent intent = new Intent(this,this.getClass());
            String sql = "UPDATE User SET Email='"+_user.getEmail()+
                    "', Voornaam='"+_user.getFirstName()+
                    "', Achternaam='"+_user.getSurname()+
                    "', PostalCode='"+_user.getPostalCode()+
                    "', Housenumber='"+_user.getHouseNumber()+
                    "' WHERE User_ID="+1+";";
            if(_dataSource.DbHelper._database != null){
                _dataSource.open();
                _dataSource.DbHelper._database.execSQL(sql);
                _dataSource.close();
            }
            startActivity(intent);
        } else {
            Toast.makeText(this, getString(R.string.everyFieldIsMandatory), Toast.LENGTH_LONG).show();
        }
    }
}

public void cancelToApplication(View view){
    Intent intent = new Intent(this, this.getClass());
    startActivity(intent);
}

public void toApplication(View view){
    if(CheckInfo()){
        if(RetrieveInfo()){
            Intent intent = new Intent(this, this.getClass());

            String sql = "INSERT INTO User(Email, Voornaam, Achternaam, PostalCode, Housenumber)" +
                    " VALUES('"+_user.getEmail()+"'," +
                            "'"+_user.getFirstName()+"','"+_user.getSurname()+"'," +
                                    "'"+_user.getPostalCode()+"','"+_user.getHouseNumber()+"');";
            String sql2 = "SELECT User_ID From User WHERE Email = '"+_user.getEmail()+"';";
            _dataSource = new DataSource(this);
            if(_dataSource.DbHelper._database != null){
                _dataSource.open();
                _dataSource.DbHelper._database.execSQL(sql);
                Cursor cursor = _dataSource.DbHelper._database.rawQuery(sql2,null);                         
                cursor.moveToFirst();
                _dataSource.close();

                while (!cursor.isAfterLast()) {
                    cursor.moveToNext();
                }
                cursor.close();
            }
            startActivity(intent);
        } else {
            Toast.makeText(this, getString(R.string.everyFieldIsMandatory), Toast.LENGTH_LONG).show();
        }
    }
}

private User getUser(){
    String sql = "SELECT * FROM User";
    String email = "", voornaam = "", achternaam = "", postalCode = "", housenumber = "";
    if(_dataSource.DbHelper._database != null){
        _dataSource.open();
        Cursor cursor = _dataSource.DbHelper._database.rawQuery(sql,null);                          
        cursor.moveToFirst();
        _dataSource.close();

        while (!cursor.isAfterLast()) {
            email = cursor.getString(1);
            voornaam = cursor.getString(2);
            achternaam = cursor.getString(3);
            postalCode = cursor.getString(4);
            housenumber = cursor.getString(5);
            cursor.moveToNext();
        }
        cursor.close();
    }
    return new User(email,voornaam,achternaam,postalCode,housenumber);
}

public void createFile(){
    _dataSource = new DataSource(this);
}

public void addItemsOnSpinner2(List<String> list) {
    _spinner2 = (Spinner) findViewById(R.id.spinner2);
    ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
        android.R.layout.simple_spinner_item, list);
    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    _spinner2.setAdapter(dataAdapter);
    _sizesAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, list);
}

public void addItemsToAdapter(List<String> list){
    _dataAdapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_spinner_item, list);
}

public void addListenerOnSpinnerItemSelection() {
    _spinner1 = (Spinner) findViewById(R.id.spinner1);

    _spinner1.setOnItemSelectedListener(
            new OnItemSelectedListener() {
                public void onItemSelected(
                        AdapterView<?> parent, View view, int position, long id) {
                    _inch = Double.parseDouble(parent.getItemAtPosition(position).toString());
                    String sql = "SELECT Maat, Category FROM Band Where Inch = "+_inch;                     
                    _spinner2 = (Spinner) findViewById(R.id.spinner2);

                    if(_dataSource.DbHelper._database != null){
                        _dataSource.open();
                        Cursor cursor = _dataSource.DbHelper._database.rawQuery(sql,null);                          
                        cursor.moveToFirst();
                        _dataSource.close();
                        if(_categoryList.size() != 0){
                            _categoryList.clear();
                        }
                        if(_sizes.size() != 0){
                            _sizes.clear();
                        }
                        while (!cursor.isAfterLast()) {
                            _sizes.add(cursor.getString(0));

                            if(cursor.getString(1) !=null){
                                _categoryList.add(cursor.getString(1));
                            }
                            cursor.moveToNext();
                        }
                        cursor.close();
                    }
                    addItemsOnSpinner2(_sizes); 
                    addItemsToAdapter(_categoryList);
                }

                public void onNothingSelected(AdapterView<?> parent) {

                }
            });
  }

public void addListenerOnSpinner2ItemSelection() {
    _spinner2 = (Spinner) findViewById(R.id.spinner2);
    _spinner2.setOnItemSelectedListener(
            new OnItemSelectedListener() {
                public void onItemSelected(
                        AdapterView<?> parent, View view, int position, long id) {
                    if(_categoryList != null){
                        _category = Integer.parseInt(_dataAdapter.getItem(position));
                    }
                    if(_sizes != null){
                        _size = _sizesAdapter.getItem(position);
                    }
                }

                public void onNothingSelected(AdapterView<?> parent) {

                }
            });
  }

public void next(View view) {
    Intent intent = new Intent(this, Step2.class);
    intent.putExtra(EXTRA_MESSAGE, _category);
    intent.putExtra(EXTRA_MESSAGE2, _inch);
    intent.putExtra(EXTRA_MESSAGE3, _size);
    intent.putExtra(EXTRA_MESSAGE5, (Serializable) _user);
    startActivity(intent);
}

}

As far as i know i'm not doing anything which has something to do with creating files on the memory. The only thing i'm doing in the createFile method is checking if a database exists on memory (and it does exists if i may believe my file explorer). If the database does not exist, it'll create the database.