Galleria issue with SAP UI5

I have a dialog box that I open to run a slideshow of some photos. The first time I open the page the Galleria slideshow works fine. If I close out and reopen it that it fails and gives me: Fatal error: Could not extract a stage height from the CSS. Traced height: 0px.

Has anyone else seen this or know how to fix it? Here is my function:

CheckTire:function(oEvent){

  var oSelectedObj = oEvent.getSource().getBindingContext().getObject();

  if(oSelectedObj.ImageSource.search("TIRE") < 0)

  {

  sap.ui.core.routing.Router.getRouter("appRouter").navTo("photoQueueView",{},true);

  }

  else

  {

     var oDialog = new sap.ui.commons.Dialog({title: "Tire Gallery",modal:true,showCloseButton:true});

     var galleryContent = "";

     var firstImage = oSelectedObj.ImageSource;

     var imageBase = firstImage.substring(0, firstImage.length - 6);

     for(var i = 1; i <= oSelectedObj.MaxSeqNumber; i++)

     {

      var nextImage = "";

      if(i < 10)

      {

      nextImage = imageBase + "0" + i + ".jpg";

      }

      else

      {

      nextImage = imageBase + i + ".jpg";

      }

      galleryContent = galleryContent + "<a href='" + nextImage + "'><img src='" + nextImage + "'></a>";

     }

     var html1 = new sap.ui.core.HTML({

      content: "<div id='galleria'> "+galleryContent+" </div>",

      preferDOM : false

     });

     oDialog.addContent(html1);

     Galleria.run('#galleria', {

      transition: 'fade',

      transitionSpeed: 1,

      autoplay: 100

     });

  oDialog.open();

  }

  //sap.ui.getCore().byId('iem_header_menu').setValue(localBundle.getText('MAIN_MENU'));

  },