1 files changed, 4 insertions, 2 deletions

diff --git a/js/controllers/styles-controller.js b/js/controllers/styles-controller.js
index ec4314f9..2ff3e235 100755
--- a/js/controllers/styles-controller.js
+++ b/js/controllers/styles-controller.js
@@ -795,7 +795,9 @@ var stylesController = exports.StylesController = Montage.create(Component, {
             ///// method to apply/test the new value
             dec.setProperty(property, value, priority);
 
-            this.styleSheetModified(rule.parentStyleSheet);
+            if(rule.parentStyleSheet) {
+                this.styleSheetModified(rule.parentStyleSheet);
+            }
 
             ///// Return browser value for value we just set
             return dec.getPropertyValue(property);
@@ -1102,7 +1104,7 @@ var stylesController = exports.StylesController = Montage.create(Component, {
                 ///// The dominant rule might not have the style property defined - why?
                 ///// If no rules have the property defined, we can use the
                 ///// most-specific single-target rule as the dominant rule (for setting styles)
-                return element.ownerDocument.defaultView.getComputedStyle(element).getPropertyValue(property);
+                return (element.ownerDocument.defaultView ? element.ownerDocument.defaultView.getComputedStyle(element).getPropertyValue(property) : null);
             }
 
             return value;