application crashed, heap is Over-filled.

Hello. My application is crashed when I navigate through 2 views. I am just opening subscriber controller from tasklist.js and than closing it. On the fifth or six attempt applications crashes. the erroor is : exception on thread: main msg:java.lang.NullPointerException. can you help me please?

1.It is my console log from starting app till it crashes:

[INFO] :   Installing app on device: MediaPad 7 Youth
[INFO] :   App successfully installed
[INFO] :   Starting app: com.energo/.EnergoproActivity
[INFO] :   Application pid: 9681
[INFO] :   Project built successfully in 48s 859ms
-- Start application log -----------------------------------------------------
[INFO] :   TiApplication: (main) [0,0] checkpoint, app created.
[INFO] :   TiApplication: (main) [119,119] Titanium 3.2.3 (2014/04/22 10:17 b958a70)
[INFO] :   TiApplication: (main) [217,336] Titanium Javascript runtime: v8
[INFO] :   TiRootActivity: (main) [0,0] checkpoint, on root activity create, savedInstanceState: null
[WARN] :   V8Object: Runtime disposed, cannot set property 'userAgent'
[ERROR] :  dalvikvm: GC_FOR_ALLOC freed 966K, 16% free 7100K/8391K, paused 2ms+2ms, total 15ms
[INFO] :   tasklist.js opened
[ERROR] :  dalvikvm: GC_FOR_ALLOC freed 1488K, 20% free 7364K/9159K, paused 2ms+3ms, total 21ms
[INFO] :   I/dalvikvm-heap: Grow heap (frag case) to 8.065MB for 614416-byte allocation
[ERROR] :  dalvikvm: GC_FOR_ALLOC freed 11K, 19% free 7952K/9799K, paused 2ms+2ms, total 19ms
[INFO] :   TiRootActivity: (main) [0,0] checkpoint, on root activity resume. activity = com.energo.EnergoproActivity@41a93b60
[ERROR] :  dalvikvm: GC_CONCURRENT freed 1237K, 16% free 8671K/10247K, paused 12ms+6ms, total 46ms
[INFO] :   Choreographer: Skipped 111 frames!  The application may be doing too much work on its main thread.
[INFO] :   TiAnalyticsSvc: (Thread-723) [30216,30216] Analytics Service Started
[ERROR] :  dalvikvm: GC_CONCURRENT freed 1372K, 16% free 9301K/11015K, paused 15ms+7ms, total 60ms
[INFO] :   TiAnalyticsSvc: (Thread-723) [15127,45343] Stopping Analytics Service
[INFO] :   subscriber.js opened
[ERROR] :  dalvikvm: GC_CONCURRENT freed 1323K, 15% free 9989K/11655K, paused 12ms+8ms, total 64ms
[INFO] :   subscriber.js opened
[ERROR] :  dalvikvm: GC_CONCURRENT freed 1891K, 18% free 10135K/12359K, paused 12ms+22ms, total 81ms
[INFO] :   subscriber.js opened
[ERROR] :  dalvikvm: GC_CONCURRENT freed 1796K, 17% free 10324K/12423K, paused 13ms+11ms, total 81ms
[ERROR] :  dalvikvm: GC_CONCURRENT freed 2056K, 19% free 10260K/12615K, paused 12ms+23ms, total 109ms
[WARN] :   dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x412df2a0)
[ERROR] :  TiApplication: (main) [335503,380846] Sending event: exception on thread: main msg:java.lang.NullPointerException; Titanium 3.2.3,2014/04/22 10:17,b958a70
[ERROR] :  TiApplication: java.lang.NullPointerException
[ERROR] :  TiApplication:   at android.view.ViewConfiguration.get(ViewConfiguration.java:332)
[ERROR] :  TiApplication:   at android.view.View.<init>(View.java:3250)
[ERROR] :  TiApplication:   at android.view.ViewGroup.<init>(ViewGroup.java:416)
[ERROR] :  TiApplication:   at android.widget.FrameLayout.<init>(FrameLayout.java:93)
[ERROR] :  TiApplication:   at ti.modules.titanium.ui.widget.tableview.TiTableView.<init>(TiTableView.java:266)
[ERROR] :  TiApplication:   at ti.modules.titanium.ui.widget.TiUITableView.processProperties(TiUITableView.java:106)
[ERROR] :  TiApplication:   at org.appcelerator.kroll.KrollProxy.setModelListener(KrollProxy.java:1185)
[ERROR] :  TiApplication:   at org.appcelerator.titanium.proxy.TiViewProxy.realizeViews(TiViewProxy.java:480)
[ERROR] :  TiApplication:   at org.appcelerator.titanium.proxy.TiViewProxy.handleGetView(TiViewProxy.java:471)
[ERROR] :  TiApplication:   at org.appcelerator.titanium.proxy.TiViewProxy.getOrCreateView(TiViewProxy.java:449)
[ERROR] :  TiApplication:   at ti.modules.titanium.ui.TableViewProxy.getTableView(TableViewProxy.java:147)
[ERROR] :  TiApplication:   at ti.modules.titanium.ui.TableViewProxy.handleSetData(TableViewProxy.java:692)
[ERROR] :  TiApplication:   at ti.modules.titanium.ui.TableViewProxy.handleMessage(TableViewProxy.java:869)
[ERROR] :  TiApplication:   at android.os.Handler.dispatchMessage(Handler.java:95)
[ERROR] :  TiApplication:   at android.os.Looper.loop(Looper.java:137)
[ERROR] :  TiApplication:   at android.app.ActivityThread.main(ActivityThread.java:4830)
[ERROR] :  TiApplication:   at java.lang.reflect.Method.invokeNative(Native Method)
[ERROR] :  TiApplication:   at java.lang.reflect.Method.invoke(Method.java:511)
[ERROR] :  TiApplication:   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
[ERROR] :  TiApplication:   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
[ERROR] :  TiApplication:   at dalvik.system.NativeStart.main(Native Method)

2.index.js:

var taskList = new Alloy.createController("taskList").getView();
taskList.open();

3.taskList.js:

var tasks = Alloy.Collections.taskList;
tasks.fetch();
 
Ti.API.info('tasklist.js opened');
 
function fillRouteList(){
 
        //fill tasks
    var file = Ti.Filesystem.getFile(Titanium.Filesystem.resourcesDirectory, 'TaskList.txt');
    var data = file.read().text;
    var response = JSON.parse(data);
    var tasks = Alloy.Collections.taskList;
    if(tasks.length==0) {
         for(var i =0;i<response.count;i++){
            var task = Alloy.createModel("taskList", response.tasks[i]);
            tasks.add(task);
            task.save(task);    
        }
    }else{
        alert("??? ???? ?????????????");
    }
        tasks.fetch();
 
        // fill subrscribers    
    var subscribers = Alloy.Collections.subscriber;
    subscribers.fetch();
    var file = Ti.Filesystem.getFile(Titanium.Filesystem.resourcesDirectory, 'Subscribes.txt');
    var data = file.read().text;
    var response = JSON.parse(data);
    var subs = Alloy.Collections.subscriber;
    if(subs.length==0) {
         for(var i =0;i<response.count;i++){
            var sub = Alloy.createModel("subscriber", response.sub[i]);
            subs.add(sub);
            sub.save(sub);
 
            }
    }else{
        alert("??? ???? ?????????????2");
    }
        subs.fetch();
 
}
 
function removeAll(){
    var tasks = Alloy.Collections.taskList;
    while(tasks.length) { 
        tasks.at(0).destroy(); 
    }   
        var subscribers = Alloy.Collections.subscriber;
    while (subscribers.length > 0) {
    var model = subscribers.at(0);
    subscribers.remove(model);                          // this  is how I can delete whole model. clear model
    model.destroy();
}
}
 
function filterByTypeAgdgena(e){
    tasks.fetch({
        query: 'SELECT * FROM taskList where taskType = "???????"'
    }); 
}
 
function filterByTypeChachra(e){
    tasks.fetch({
        query: 'SELECT * FROM taskList where taskType = "?????"'
    });    
}
 
function filterByTypeBoth(e){
    tasks.fetch({
        query: 'SELECT * FROM taskList where taskType = "?????/???????"'
    });   
}
 
function ClearFilterByType(e){
    tasks.fetch({
        query: 'SELECT * FROM taskList'
    });  
}
 
 
 
$.taskListTable.addEventListener("click", function(e) {
 
    var sections = $.taskListTable.data;
    var section = sections[0];
    var theRow = section.rows[e.index];
 
    var rowContainer = theRow.getChildren()[0]; //This is "rowContainer"
    var taskListRowTitleIdContainer = rowContainer.getChildren()[0]; // this is taskListRowTitleIdContainer
    var selectedId =  taskListRowTitleIdContainer.getChildren()[0]; 
 
    var taskListRowTitleNameContainer = rowContainer.getChildren()[1]; // this is taskListRowTitleNameContainer
    var selectedName = taskListRowTitleNameContainer.getChildren()[0]; 
 
    var send = tasks.get(e.rowData.model);
 
      var subscriber = Alloy.createController("subscriber", {
        data: selectedId.text,
        dataName : selectedName.text
  });
 
  subscriber.getView().open();
 
});
 
Alloy.Globals.destroySubscriber = function() {
    subscriber.destroy();
    subscriber.getView().close();
};

3.and subscriber.js:

var args = arguments[0] || {};
    // alert(args.$model.attributes.id);
    var subscribers = Alloy.Collections.subscriber;
    subscribers.fetch();
    Ti.API.info('subscriber.js opened');
 
    var search = Alloy.createController("searchview").getView();
    $.subscriberListTable.search = search;
 
    $.container.addEventListener("open", function() {
        $.container.activity.onCreateOptionsMenu = function(e) {
            var menu = e.menu;
            menu.add({
                title:"?????? ?????????????",
                showAsAction : Ti.Android.SHOW_AS_ACTION_NEVER
            });
            menu.add({
                title:"?????? ???????????",
                showAsAction : Ti.Android.SHOW_AS_ACTION_NEVER
            });
            menu.add({
                title: args.dataName,
                showAsAction : Ti.Android.SHOW_AS_ACTION_ALWAYS
            });
            var backBtn = menu.add({
                title:"<-?????????? ???",
                showAsAction : Ti.Android.SHOW_AS_ACTION_ALWAYS
            });
            var searchBtn = menu.add({
                title: "Table Search",
                icon: (Ti.Android.R.drawable.ic_menu_search ? Ti.Android.R.drawable.ic_menu_search : "my_search.png"),
                actionView: search,
                showAsAction : Ti.Android.SHOW_AS_ACTION_ALWAYS 
            });
 
            searchBtn.addEventListener("click", function(e) {
                // $.searchTextField.setVisible('true');
            });
 
 
            backBtn.addEventListener("click", function(e) {
                $.container.close();
            });
 
 
        };
        $.container.activity.invalidateOptionsMenu();
    });
 
    function filterFunction(collection) {
        var subscribers = Alloy.Collections.subscriber;
            return subscribers.where({
                taskNum :  args.data
            }); 
    }
 
    function filterFunctionTransform(model) {
            var transform = model.toJSON();
            return transform;
    }
 
    function openTaskList(){
        tasks.fetch();
        Alloy.Globals.destroySubscriber();
    }
 
    function refreshSubscribersList() {
        subscribers.fetch();
    }
 
    $.subscriberListTable.addEventListener("click", function(e) {
 
        var sections = $.subscriberListTable.data;
        var section = sections[0];
        var theRow = section.rows[e.index];
        var rowIndex = e.index;
        var rowContainer = theRow.getChildren()[0]; //This is "rowContainer"
        var sbuscriberListRowTitleIdContainer = rowContainer.getChildren()[0]; // this is subscriberListRowTitleIdContainer
        var selectedId =  sbuscriberListRowTitleIdContainer.getChildren()[0]; 
        var subscriber = Alloy.createController("form", {
            id : selectedId.text,
            data : args.data
        });
 
        subscriber.getView().open();
    });

Can you give any advices?I think it's heap problem, but I dont know why is heap overfilled? if you need to see my views too let me know and I'll copy them too