Openlayers popup not closing

This is a special case, I have many popups attached to objects and they work fine and I am having a problem in only one case.

All layers and popups are handled by select control's onFeatureSelect, but this one is handled by layers featureSelected event.

On opening popup it throws:

Uncaught TypeError: Cannot read property 'lat' of null.

Expanding error shows error on function OpenLayers.Bounds.OpenLayers.Class.determineQuadrant but the popup opens.

On Clicking the close button, the click event is also fired and onPopupClose function is also called ( I have checked it with monitor and monitorEvents in console) but the popup does not close. The popup in other layers is still function normally.

Here is the code:

select_Control = new OpenLayers.Control.SelectFeature([business, schools, healthfacilities, open_space], { onSelect: onFeatureSelect, onUnselect: onFeatureUnselect, click: true }); open_space.events.on({ "featureselected": function(e) { var PopupPos1 = e.feature.geometry.getBounds().getCenterLonLat(); popup_content = '<div class="sites-embed-border-on sites-embed sites-embed-full-width" style="width:100%;"><div class="sites-embed-object-title" style="display:none;">sifal ground</div><div class="sites-embed-content sites-embed-type-spreadsheet"><iframe src="https://spreadsheets.google.com/spreadsheet/loadredirect?chrome=false&amp;key=0AkXY0mfPYUxLdE9adGRXZFdlc1RxaHpIREtLbGhEZFE&amp;output=html&amp;pubredirect=true&amp;widget=true" width="100%" height="600" title="sifal ground" frameborder="0" id="193883325"></iframe></div></div>'; var popup1 = new OpenLayers.Popup.FramedCloud("chicken", PopupPos1, null, popup_content, null, true, onPopupClose); e.feature.popup = popup1; map.addPopup(popup1); popup1.setBackgroundColor('#FFBBBB'); popup1.updateSize(); popup1.draw(); } }) function onPopupClose(e) { select_Control.unselectAll(); } function onFeatureSelect(feature) { //debugger; var PopupPos1 = new OpenLayers.LonLat(feature.geometry.x, feature.geometry.y) popup_content = feature.attributes.name; var popup1 = new OpenLayers.Popup.FramedCloud("chicken", PopupPos1, null, popup_content, null, true, onPopupClose); feature.popup = popup1; map.addPopup(popup1); popup1.setBackgroundColor('#FFBBBB'); popup1.draw(); } function onFeatureUnselect(feature) { map.removePopup(feature.popup); select_Control.unselectAll(); }