diff --git a/Podfile b/Podfile
index f5dfeaa866..2847f8fe3e 100644
--- a/Podfile
+++ b/Podfile
@@ -3,7 +3,7 @@ source 'https://github.com/CocoaPods/Specs.git'
 
 target 'Signal' do
     pod 'SocketRocket',               :git => 'https://github.com/facebook/SocketRocket.git'
-    pod 'SignalServiceKit',           git: 'https://github.com/WhisperSystems/SignalServiceKit.git', branch: 'mkirk/ignore-unknown-message-types'
+    pod 'SignalServiceKit',           git: 'https://github.com/WhisperSystems/SignalServiceKit.git'
     #pod 'SignalServiceKit',           path: '../SignalServiceKit'
     pod 'OpenSSL'
     pod 'PastelogKit',                '~> 1.3'
diff --git a/Podfile.lock b/Podfile.lock
index 9d3777b5cd..b887096ae2 100644
--- a/Podfile.lock
+++ b/Podfile.lock
@@ -122,13 +122,12 @@ DEPENDENCIES:
   - OpenSSL
   - PastelogKit (~> 1.3)
   - SCWaveformView (~> 1.0)
-  - SignalServiceKit (from `https://github.com/WhisperSystems/SignalServiceKit.git`, branch `mkirk/ignore-unknown-message-types`)
+  - SignalServiceKit (from `https://github.com/WhisperSystems/SignalServiceKit.git`)
   - SocketRocket (from `https://github.com/facebook/SocketRocket.git`)
   - ZXingObjC
 
 EXTERNAL SOURCES:
   SignalServiceKit:
-    :branch: mkirk/ignore-unknown-message-types
     :git: https://github.com/WhisperSystems/SignalServiceKit.git
   SocketRocket:
     :git: https://github.com/facebook/SocketRocket.git
@@ -167,6 +166,6 @@ SPEC CHECKSUMS:
   YapDatabase: b1e43555a34a5298e23a045be96817a5ef0da58f
   ZXingObjC: bf15b3814f7a105b6d99f47da2333c93a063650a
 
-PODFILE CHECKSUM: a4bcdf4d0f3b2a1c27c670c3182806fc11309d9e
+PODFILE CHECKSUM: 93ccdbbb243044904d772ee53e00154890a9f82f
 
 COCOAPODS: 1.0.1
diff --git a/Signal/Signal-Info.plist b/Signal/Signal-Info.plist
index 5f5d195856..e0535c1301 100644
--- a/Signal/Signal-Info.plist
+++ b/Signal/Signal-Info.plist
@@ -38,7 +38,7 @@
 		</dict>
 	</array>
 	<key>CFBundleVersion</key>
-	<string>2.6.6.1</string>
+	<string>2.6.6.4</string>
 	<key>ITSAppUsesNonExemptEncryption</key>
 	<false/>
 	<key>LOGS_EMAIL</key>
diff --git a/Signal/src/Storyboard/Main.storyboard b/Signal/src/Storyboard/Main.storyboard
index f0329e87f6..b7f6654df7 100644
--- a/Signal/src/Storyboard/Main.storyboard
+++ b/Signal/src/Storyboard/Main.storyboard
@@ -1403,7 +1403,7 @@
                                             <nil key="textColor"/>
                                             <nil key="highlightedColor"/>
                                         </label>
-                                        <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="11n-jp-FCg">
+                                        <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="empty-group-avatar" translatesAutoresizingMaskIntoConstraints="NO" id="11n-jp-FCg">
                                             <rect key="frame" x="16" y="4" width="39.5" height="39.5"/>
                                             <constraints>
                                                 <constraint firstAttribute="width" secondItem="11n-jp-FCg" secondAttribute="height" multiplier="1:1" id="CMp-Im-YMw"/>
@@ -1484,11 +1484,11 @@
                         <viewControllerLayoutGuide type="bottom" id="kH6-9L-pzh"/>
                     </layoutGuides>
                     <view key="view" contentMode="scaleToFill" id="P0X-AM-Yjw">
-                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <rect key="frame" x="0.0" y="64" width="375" height="603"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Ukg-om-VX3" userLabel="Group Details">
-                                <rect key="frame" x="0.0" y="20" width="375" height="100"/>
+                                <rect key="frame" x="0.0" y="0.0" width="375" height="100"/>
                                 <subviews>
                                     <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Ul8-NY-i4c">
                                         <rect key="frame" x="8" y="20" width="60" height="60"/>
@@ -1523,7 +1523,7 @@
                                 </constraints>
                             </view>
                             <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" allowsMultipleSelection="YES" rowHeight="44" sectionHeaderHeight="22" sectionFooterHeight="22" translatesAutoresizingMaskIntoConstraints="NO" id="cFo-AT-Srf">
-                                <rect key="frame" x="0.0" y="128" width="375" height="539"/>
+                                <rect key="frame" x="0.0" y="108" width="375" height="495"/>
                                 <color key="backgroundColor" red="0.94901960780000005" green="0.94901960780000005" blue="0.94901960780000005" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                 <view key="tableHeaderView" contentMode="scaleToFill" id="ekO-kw-iHV" userLabel="Header View">
                                     <rect key="frame" x="0.0" y="0.0" width="375" height="40"/>
@@ -1660,7 +1660,7 @@
         <simulatedScreenMetrics key="destination" type="retina4_7.fullscreen"/>
     </simulatedMetricsContainer>
     <inferredMetricsTieBreakers>
-        <segue reference="E8S-Yc-X7E"/>
         <segue reference="wgA-Oo-kKq"/>
+        <segue reference="D0d-4f-lcI"/>
     </inferredMetricsTieBreakers>
 </document>
diff --git a/Signal/src/views/ContactTableViewCell.m b/Signal/src/views/ContactTableViewCell.m
index edceb5b948..6eda2b0c7d 100644
--- a/Signal/src/views/ContactTableViewCell.m
+++ b/Signal/src/views/ContactTableViewCell.m
@@ -5,6 +5,8 @@
 #import "PhoneManager.h"
 #import "UIUtil.h"
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface ContactTableViewCell ()
 
 @property (nonatomic) IBOutlet UILabel *nameLabel;
@@ -14,12 +16,8 @@
 
 @implementation ContactTableViewCell
 
-- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
-    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
-    return self;
-}
-
-- (NSString *)reuseIdentifier {
+- (nullable NSString *)reuseIdentifier
+{
     return NSStringFromClass(self.class);
 }
 
@@ -30,6 +28,9 @@
         [[[OWSContactAvatarBuilder alloc] initWithContactId:contact.textSecureIdentifiers.firstObject
                                                        name:contact.fullName
                                             contactsManager:contactsManager] build];
+
+    // Force layout, since imageView isn't being initally rendered on App Store optimized build.
+    [self layoutSubviews];
 }
 
 - (void)layoutSubviews
@@ -75,3 +76,5 @@
 }
 
 @end
+
+NS_ASSUME_NONNULL_END