diff --git a/Tablet/TableRowBuilder.swift b/Tablet/TableRowBuilder.swift
index 33b2439..d3a3b8b 100644
--- a/Tablet/TableRowBuilder.swift
+++ b/Tablet/TableRowBuilder.swift
@@ -28,7 +28,7 @@ internal enum ActionHandler<I, C> {
     case actionBlock((data: ActionData<I, C>) -> Void)
     case actionReturnBlock((data: ActionData<I, C>) -> AnyObject?)
     
-    func invoke(data: ActionData<I, C>) -> AnyObject? {
+    func invoke(data: ActionData<I, C>) -> ReturnValue {
 
         switch (self) {
         case .actionBlock(let closure):
@@ -129,11 +129,11 @@ public class TableRowBuilder<I, C where C: UITableViewCell> : RowBuilder {
 */
 public class TableConfigurableRowBuilder<I, C: ConfigurableCell where C.Item == I, C: UITableViewCell> : TableRowBuilder<I, C> {
 
-    public init(item: I, estimatedRowHeight: CGFloat = UITableViewAutomaticDimension) {
+    public init(item: I, estimatedRowHeight: CGFloat) {
         super.init(item: item, id: C.reusableIdentifier(), estimatedRowHeight: estimatedRowHeight)
     }
 
-    public init(items: [I]? = nil, estimatedRowHeight: CGFloat = UITableViewAutomaticDimension) {
+    public init(items: [I]? = nil, estimatedRowHeight: CGFloat) {
         super.init(items: items, id: C.reusableIdentifier(), estimatedRowHeight: estimatedRowHeight)
     }
 
diff --git a/TabletDemo/TabletDemo.xcodeproj/project.xcworkspace/xcuserdata/max.xcuserdatad/UserInterfaceState.xcuserstate b/TabletDemo/TabletDemo.xcodeproj/project.xcworkspace/xcuserdata/max.xcuserdatad/UserInterfaceState.xcuserstate
index f1039ba..fc56dad 100644
Binary files a/TabletDemo/TabletDemo.xcodeproj/project.xcworkspace/xcuserdata/max.xcuserdatad/UserInterfaceState.xcuserstate and b/TabletDemo/TabletDemo.xcodeproj/project.xcworkspace/xcuserdata/max.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/TabletDemo/TabletDemo/TableDirectorExtensions.swift b/TabletDemo/TabletDemo/TableDirectorExtensions.swift
index 0952a03..e4a6dcd 100644
--- a/TabletDemo/TabletDemo/TableDirectorExtensions.swift
+++ b/TabletDemo/TabletDemo/TableDirectorExtensions.swift
@@ -13,6 +13,6 @@ extension TableDirector {
 
     public func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
         
-        invokeAction(.custom(""), cell: nil, indexPath: nil)
+        //invokeAction(.custom(""), cell: nil, indexPath: nil)
     }
 }
\ No newline at end of file