diff --git a/OHIFViewer-react/package.json b/OHIFViewer-react/package.json
index 4d9ee8dad..aa43be1bb 100644
--- a/OHIFViewer-react/package.json
+++ b/OHIFViewer-react/package.json
@@ -13,7 +13,7 @@
     "hammerjs": "^2.0.8",
     "lodash.debounce": "^4.0.8",
     "moment": "^2.22.2",
-    "ohif-core": "^0.1.0",
+    "ohif-core": "^0.1.1",
     "prop-types": "^15.6.2",
     "query-string": "^6.2.0",
     "react": "^16.4.1",
@@ -23,7 +23,7 @@
     "react-router": "^4.3.1",
     "react-router-dom": "^4.3.1",
     "react-scripts": "^2.1.1",
-    "react-viewerbase": "^0.1.2",
+    "react-viewerbase": "^0.1.4",
     "redux": "^4.0.1"
   },
   "scripts": {
diff --git a/OHIFViewer-react/src/FlexboxLayout/ToolbarRow.js b/OHIFViewer-react/src/FlexboxLayout/ToolbarRow.js
index 96d1a2d34..e9fb80088 100644
--- a/OHIFViewer-react/src/FlexboxLayout/ToolbarRow.js
+++ b/OHIFViewer-react/src/FlexboxLayout/ToolbarRow.js
@@ -1,19 +1,25 @@
 import React, { Component } from "react";
-import PropTypes from "prop-types";
 import ConnectedToolbarSection from './ConnectedToolbarSection';
+import { RoundedButtonGroup } from 'react-viewerbase';
 import './ToolbarRow.css';
 
 class ToolbarRow extends Component {
-    constructor(props) {
-        super(props);
-
-    }
-
     render() {
+        const leftSidebarToggle = [{
+            value: 'studies',
+            svgLink: '/icons.svg#icon-studies',
+            svgWidth: 15,
+            svgHeight: 13,
+            bottomLabel: 'Series',
+            onValueChanged: (value) => {
+                console.log('value changed: ', value);
+            }
+        }];
+
         return (<div className="ToolbarRow">
             <div className="clearfix">
                 <div className="pull-left m-t-1">
-                    {/* > roundedButtonGroup leftSidebarToggleButtonData */}
+                    <RoundedButtonGroup options={leftSidebarToggle}/>
                 </div>
                 <ConnectedToolbarSection/>
                 <div className="pull-right m-t-1 rm-x-1">
@@ -25,8 +31,4 @@ class ToolbarRow extends Component {
     }
 }
 
-ToolbarRow.propTypes = {
-    //studies: PropTypes.array
-};
-
 export default ToolbarRow;
diff --git a/OHIFViewer-react/src/FlexboxLayout/ViewerMain.js b/OHIFViewer-react/src/FlexboxLayout/ViewerMain.js
index 7368b0e45..15d30c592 100644
--- a/OHIFViewer-react/src/FlexboxLayout/ViewerMain.js
+++ b/OHIFViewer-react/src/FlexboxLayout/ViewerMain.js
@@ -73,8 +73,6 @@ class ViewerMain extends Component {
         this.setState({
             displaySets
         });
-
-        debugger;
     }
 
     getCornerstoneViewport(data, index) {
diff --git a/OHIFViewer-react/src/index.js b/OHIFViewer-react/src/index.js
index 817064250..4f9b8f5ec 100644
--- a/OHIFViewer-react/src/index.js
+++ b/OHIFViewer-react/src/index.js
@@ -2,12 +2,17 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import { BrowserRouter } from 'react-router-dom';
 import { Provider } from 'react-redux';
-import { createStore } from 'redux';
+import { createStore, combineReducers } from 'redux';
 import App from './App.js';
 import OHIF from 'ohif-core';
 import './config';
+import ui from './redux/ui.js'
 
-const store = createStore(OHIF.redux.combinedReducer);
+const reducers = OHIF.redux.reducers;
+reducers.ui = ui;
+
+const combined = combineReducers(reducers)
+const store = createStore(combined);
 
 const servers = {
     dicomWeb: [
diff --git a/OHIFViewer-react/src/redux/ui.js b/OHIFViewer-react/src/redux/ui.js
new file mode 100644
index 000000000..fcf9501d4
--- /dev/null
+++ b/OHIFViewer-react/src/redux/ui.js
@@ -0,0 +1,17 @@
+const defaultState = {
+    sidebarLeftOpen: true,
+    sidebarRightOpen: true,
+}
+
+const ui = (state = defaultState, action) => {
+    switch (action.type) {
+        case 'TOGGLE_LEFT_SIDEBAR':
+            return Object.assign({}, state, { sidebarLeftOpen: !state.sidebarLeftOpen });
+        case 'TOGGLE_RIGHT_SIDEBAR':
+            return Object.assign({}, state, { sidebarRightOpen: !state.sidebarRightOpen });
+        default:
+            return state;
+    }
+};
+
+export default ui;
diff --git a/OHIFViewer-react/src/sha.js b/OHIFViewer-react/src/sha.js
index 43a25fe30..7ef41b114 100644
--- a/OHIFViewer-react/src/sha.js
+++ b/OHIFViewer-react/src/sha.js
@@ -1 +1 @@
-export default 'e84197b19de7f434a322139752b306bf0ce847fa';
+export default '4174018149a2ccfece83df3b190ba9aeed548521';
diff --git a/OHIFViewer-react/yarn.lock b/OHIFViewer-react/yarn.lock
index a13eb2837..6c9affa2d 100644
--- a/OHIFViewer-react/yarn.lock
+++ b/OHIFViewer-react/yarn.lock
@@ -6832,10 +6832,10 @@ obuf@^1.0.0, obuf@^1.1.1:
   resolved "https://registry.yarnpkg.com/obuf/-/obuf-1.1.2.tgz#09bea3343d41859ebd446292d11c9d4db619084e"
   integrity sha512-PX1wu0AmAdPqOL1mWhqmlOd8kOIZQwGZw6rh7uby9fTc5lhaOWFLX3I6R1hrF9k3zUY40e6igsLGkDXK92LJNg==
 
-ohif-core@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/ohif-core/-/ohif-core-0.1.0.tgz#5de7a7e51abb3c895ed1479cf4b607f1f162cf8a"
-  integrity sha512-4jICzpSTM8Nfq8rY1JjKk/hWRGLWO3eq154PGX8fqYcQuTx8DxDlQLlKQoKbgRqNH2LBGBtOfDWjCZaBp7cDfg==
+ohif-core@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/ohif-core/-/ohif-core-0.1.1.tgz#594b5a7969c11e5d5eaa3890a384f39409543d3b"
+  integrity sha512-Ib/lI9fioMiqt5DXmZ8iXtiSne8Z2ubQoh/ePAwgZPljXfMvSY1cUpQK+O90pZqBh444KDolYX00OrJIIbSRgg==
   dependencies:
     cornerstone-math "^0.1.7"
     isomorphic-base64 "^1.0.2"
@@ -8288,10 +8288,10 @@ react-scripts@^2.1.1:
   optionalDependencies:
     fsevents "1.2.4"
 
-react-viewerbase@^0.1.2:
-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/react-viewerbase/-/react-viewerbase-0.1.3.tgz#0a1861149ef5d8116e68f2d375147edf942ce1aa"
-  integrity sha512-xuMTxgXa+E3lXLeI7mn8MVSiVw8C+HwjYbxItMues5cmeRrUvpjZ0VVx8Qcvr/9XwDmKShHj4mdyKhLL0koi/Q==
+react-viewerbase@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/react-viewerbase/-/react-viewerbase-0.1.4.tgz#3df7c35e3af3cc1b1a42a8d295ab28bb086efca3"
+  integrity sha512-uj5AMJ9gdHxSJ8JmNVOS3ri9RdVhCAUFf2OX0u5qJ20vpkp3gUHE9ENjZdjYEQ8222g7jhB4d3EM1Jd8wALYNA==
   dependencies:
     classnames "^2.2.6"