diff --git a/byob.js b/byob.js
index f7b8e55e..d976917b 100644
--- a/byob.js
+++ b/byob.js
@@ -102,13 +102,12 @@ AlignmentMorph, ToggleMorph, InputFieldMorph, ReporterBlockMorph,
 StringMorph, nop, newCanvas, radians, BoxMorph, ArrowMorph, PushButtonMorph,
 contains, InputSlotMorph, ToggleButtonMorph, IDE_Morph, MenuMorph, copy,
 ToggleElementMorph, Morph, fontHeight, StageMorph, SyntaxElementMorph,
-SnapSerializer, CommentMorph, localize, CSlotMorph, SpeechBubbleMorph,
-MorphicPreferences, SymbolMorph, isNil, CursorMorph, VariableFrame,
-WatcherMorph, Variable*/
+SnapSerializer, CommentMorph, localize, CSlotMorph, MorphicPreferences,
+SymbolMorph, isNil, CursorMorph, VariableFrame, WatcherMorph, Variable*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.byob = '2016-December-27';
+modules.byob = '2016-December-29';
 
 // Declarations
 
@@ -948,6 +947,9 @@ CustomCommandBlockMorph.prototype.deleteBlockDefinition = function () {
 
 // CustomCommandBlockMorph events:
 
+// hover help - commented out for now
+/*
+
 CustomCommandBlockMorph.prototype.mouseEnter = function () {
     var comment, help;
     if (this.isTemplate && this.definition.comment) {
@@ -982,6 +984,8 @@ CustomCommandBlockMorph.prototype.popUpbubbleHelp = function (
     ).popUp(this.world(), this.rightCenter().add(new Point(-8, 0)));
 };
 
+*/
+
 // CustomCommandBlockMorph relabelling
 
 CustomCommandBlockMorph.prototype.relabel = function (alternatives) {
@@ -1127,11 +1131,14 @@ CustomReporterBlockMorph.prototype.deleteBlockDefinition
 
 // CustomReporterBlockMorph events:
 
+// hover help - commented out for now
+/*
 CustomReporterBlockMorph.prototype.mouseEnter
     = CustomCommandBlockMorph.prototype.mouseEnter;
 
 CustomReporterBlockMorph.prototype.mouseLeave
     = CustomCommandBlockMorph.prototype.mouseLeave;
+*/
 
 // CustomReporterBlockMorph bubble help:
 
diff --git a/gui.js b/gui.js
index d7f5c778..a102572d 100644
--- a/gui.js
+++ b/gui.js
@@ -72,7 +72,7 @@ isRetinaSupported, SliderMorph, Animation*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.gui = '2016-December-27';
+modules.gui = '2016-December-29';
 
 // Declarations
 
@@ -2706,7 +2706,8 @@ IDE_Morph.prototype.settingsMenu = function () {
         'toggleVariableFrameRate',
         StageMorph.prototype.frameRate,
         'uncheck for greater speed\nat variable frame rates',
-        'check for smooth, predictable\nanimations across computers'
+        'check for smooth, predictable\nanimations across computers',
+        true
     );
     addPreference(
         'Flat line ends',
diff --git a/history.txt b/history.txt
index 097ab1bf..e86ebac6 100755
--- a/history.txt
+++ b/history.txt
@@ -3223,6 +3223,11 @@ http://snap.berkeley.edu/run#cloud:Username=jens&ProjectName=rotation
 ------
 * GUI, Threads, Objects, Store: Disable JS-Functions, to protect users from malicious scripts, commented out for now
 
+161229
+------
+* BYOB: Disabled hover-help for custom blocks (some people find it annoying)
+* GUI: Hide setting for “prefer smooth animations” (now - mostly - redundant)
+
 
 == v4.10 === (in development)