IE 10 broken / Unable to get property 'text' of undefined or null reference

[aheissenberger]

Testpage: http://wangzuo.github.io/react-medium-editor/

Javascript Exception:
TypeError: Unable to get property 'text' of undefined or null reference
at ReactMediumEditor(../node_modules/react-medium-editor/dist/editor.js:48:1)
at _constructComponentWithoutOwner(../node_modules/react-dom/lib/ReactCompositeComponent.js:289:1)
at inst(../node_modules/react-dom/lib/ReactCompositeComponent.js:282:1)
at mountComponent(../node_modules/react-dom/lib/ReactCompositeComponent.js:185:1)
at mountImage(../node_modules/react-dom/lib/ReactReconciler.js:43:1)
at mountChildren(../node_modules/react-dom/lib/ReactMultiChild.js:234:1)
at this(../node_modules/react-dom/lib/ReactDOMComponent.js:702:1)
at mountComponent(../node_modules/react-dom/lib/ReactDOMComponent.js:520:1)
at mountImage(../node_modules/react-dom/lib/ReactReconciler.js:43:1)
at mountChildren(../node_modules/react-dom/lib/ReactMultiChild.js:234:1)
at this(../node_modules/react-dom/lib/ReactDOMComponent.js:702:1)
at mountComponent(../node_modules/react-dom/lib/ReactDOMComponent.js:520:1)
at mountComponent(../node_modules/react-dom/lib/ReactReconciler.js:43:1)
at performInitialMount(../node_modules/react-dom/lib/ReactCompositeComponent.js:368:1)
at mountComponent(../node_modules/react-dom/lib/ReactCompositeComponent.js:270:1)
at mountComponent(../node_modules/react-dom/lib/ReactReconciler.js:43:1)
at performInitialMount(../node_modules/react-dom/lib/ReactCompositeComponent.js:368:1)
at mountComponent(../node_modules/react-dom/lib/ReactCompositeComponent.js:270:1)
at mountComponent(../node_modules/react-dom/lib/ReactReconciler.js:43:1)
at updateChildren(../node_modules/react-dom/lib/ReactChildReconciler.js:119:1)
at nextChildren(../node_modules/react-dom/lib/ReactMultiChild.js:210:1)
at this(../node_modules/react-dom/lib/ReactMultiChild.js:308:1)
at this(../node_modules/react-dom/lib/ReactMultiChild.js:295:1)
at _updateDOMChildren(../node_modules/react-dom/lib/ReactDOMComponent.js:944:1)
at this(../node_modules/react-dom/lib/ReactDOMComponent.js:760:1)
at internalInstance(../node_modules/react-dom/lib/ReactDOMComponent.js:720:1)
at ReactReconciler(../node_modules/react-dom/lib/ReactReconciler.js:122:1)
at updateChildren(../node_modules/react-dom/lib/ReactChildReconciler.js:107:1)
at nextChildren(../node_modules/react-dom/lib/ReactMultiChild.js:210:1)
at this(../node_modules/react-dom/lib/ReactMultiChild.js:308:1)
at this(../node_modules/react-dom/lib/ReactMultiChild.js:295:1)
at _updateDOMChildren(../node_modules/react-dom/lib/ReactDOMComponent.js:944:1)
at this(../node_modules/react-dom/lib/ReactDOMComponent.js:760:1)
at internalInstance(../node_modules/react-dom/lib/ReactDOMComponent.js:720:1)
at ReactReconciler(../node_modules/react-dom/lib/ReactReconciler.js:122:1)
at this(../node_modules/react-dom/lib/ReactCompositeComponent.js:751:1)
at this(../node_modules/react-dom/lib/ReactCompositeComponent.js:721:1)
at this(../node_modules/react-dom/lib/ReactCompositeComponent.js:642:1)
at internalInstance(../node_modules/react-dom/lib/ReactCompositeComponent.js:544:1)
at ReactReconciler(../node_modules/react-dom/lib/ReactReconciler.js:122:1)
at updateChildren(../node_modules/react-dom/lib/ReactChildReconciler.js:107:1)
at nextChildren(../node_modules/react-dom/lib/ReactMultiChild.js:210:1)
at this(../node_modules/react-dom/lib/ReactMultiChild.js:308:1)
at this(../node_modules/react-dom/lib/ReactMultiChild.js:295:1)
at _updateDOMChildren(../node_modules/react-dom/lib/ReactDOMComponent.js:944:1)
at this(../node_modules/react-dom/lib/ReactDOMComponent.js:760:1)
at internalInstance(../node_modules/react-dom/lib/ReactDOMComponent.js:720:1)
at ReactReconciler(../node_modules/react-dom/lib/ReactReconciler.js:122:1)
at this(../node_modules/react-dom/lib/ReactCompositeComponent.js:751:1)
at _performComponentUpdate(../node_modules/react-dom/lib/ReactCompositeComponent.js:721:1)