diff --git a/Classes/ContainerController.m b/Classes/ContainerController.m
index 77ba19e..953ab3f 100644
--- a/Classes/ContainerController.m
+++ b/Classes/ContainerController.m
@@ -36,6 +36,7 @@
 #import "RDPackage.h"
 #import "SpineItemListController.h"
 
+#import "drmInitialize.h"
 
 @interface ContainerController () <
 	RDContainerDelegate,
@@ -290,5 +291,11 @@ - (void)viewWillAppear:(BOOL)animated {
 	}
 }
 
+- (void)containerRegisterContentModules:(RDContainer *)container{
+#ifdef _READIUM_DRM_
+    [[[DrmInitialize alloc] init] initialize];
+#endif
+}
+
 
 @end
diff --git a/Classes/ContainerListController.m b/Classes/ContainerListController.m
index 6bc8eb5..93efbf7 100644
--- a/Classes/ContainerListController.m
+++ b/Classes/ContainerListController.m
@@ -89,13 +89,19 @@ - (void)onContainerListDidChange {
 	tableView:(UITableView *)tableView
 	didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {
-	[tableView deselectRowAtIndexPath:indexPath animated:YES];
-	NSString *path = [m_paths objectAtIndex:indexPath.row];
-	ContainerController *c = [[ContainerController alloc] initWithPath:path];
-
-	if (c != nil) {
-		[self.navigationController pushViewController:c animated:YES];
-	}
+    dispatch_queue_t backgroundQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
+    dispatch_async(backgroundQueue, ^{
+        
+        [tableView deselectRowAtIndexPath:indexPath animated:YES];
+        NSString *path = [m_paths objectAtIndex:indexPath.row];
+        ContainerController *c = [[ContainerController alloc] initWithPath:path];
+        
+        dispatch_async(dispatch_get_main_queue(), ^{
+            if (c != nil) {
+                [self.navigationController pushViewController:c animated:YES];
+            }
+        });
+    });
 }
 
 
diff --git a/Classes/drmInitialize.h b/Classes/drmInitialize.h
new file mode 100644
index 0000000..8389a59
--- /dev/null
+++ b/Classes/drmInitialize.h
@@ -0,0 +1,30 @@
+//
+//  DrmInitialize.h
+//  SDKLauncher-OSX
+//
+//  Created by DRM inside Development Team on 2015-08-16.
+//  ( T.H. Kim, H.D. Yoon, H.S. Lee and C.H. Yu )
+//
+//  Copyright (c) 2015 The Readium Foundation and contributors. All rights reserved.
+//
+//  The Readium SDK is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <http://www.gnu.org/licenses/>
+//
+#import <Foundation/Foundation.h>
+
+@interface DrmInitialize : NSObject
+
+- (void)initialize;
+
+@end
+
diff --git a/SDKLauncher-iOS.xcodeproj/project.pbxproj b/SDKLauncher-iOS.xcodeproj/project.pbxproj
index 1705fa9..4bbee13 100644
--- a/SDKLauncher-iOS.xcodeproj/project.pbxproj
+++ b/SDKLauncher-iOS.xcodeproj/project.pbxproj
@@ -337,6 +337,7 @@
 		A250D54A5C423A86C6099037 /* epub30-test-0220-20131022.epub */ = {isa = PBXFileReference; lastKnownFileType = file.epub; path = "epub30-test-0220-20131022.epub"; sourceTree = "<group>"; };
 		A250D58D34D67FC218608A1F /* epub30-test-0120-20131022.epub */ = {isa = PBXFileReference; lastKnownFileType = file.epub; path = "epub30-test-0120-20131022.epub"; sourceTree = "<group>"; };
 		A250DD41B691E2CA16B1735D /* epubReadingSystem.epub */ = {isa = PBXFileReference; lastKnownFileType = file.epub; path = epubReadingSystem.epub; sourceTree = "<group>"; };
+		FFE961DC1C16E73100FA2A5C /* drmInitialize.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = drmInitialize.h; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -615,6 +616,7 @@
 		345CA3E116C00EE100B8B56A /* Main */ = {
 			isa = PBXGroup;
 			children = (
+				FFE961DC1C16E73100FA2A5C /* drmInitialize.h */,
 				3462FBBA16BC3C43003C79E1 /* AppDelegate.h */,
 				3462FBBB16BC3C43003C79E1 /* AppDelegate.m */,
 				340535A816BC5DD100D4A802 /* BaseViewController.h */,
diff --git a/readium-sdk b/readium-sdk
index 238b5b8..3c9fe52 160000
--- a/readium-sdk
+++ b/readium-sdk
@@ -1 +1 @@
-Subproject commit 238b5b88b4920f0444b619eb07c3f4ec35f32d4b
+Subproject commit 3c9fe52e5be7c2b93e4fe5bf132ec015f07c5b3a