diff --git a/Classes/ApplicationDelegate.m b/Classes/ApplicationDelegate.m
index 2bd171e..1349c9e 100644
--- a/Classes/ApplicationDelegate.m
+++ b/Classes/ApplicationDelegate.m
@@ -95,11 +95,11 @@ - (void)connect {
 	
 	// Create certificate.
 	NSData *certificateData = [NSData dataWithContentsOfFile:self.certificate];
-	CSSM_DATA data;
-	data.Data = (uint8 *)[certificateData bytes];
-	data.Length = [certificateData length];
-	result = SecCertificateCreateFromData(&data, CSSM_CERT_X_509v3, CSSM_CERT_ENCODING_BER, &certificate);// NSLog(@"SecCertificateCreateFromData(): %d", result);
-	
+    
+    certificate = SecCertificateCreateWithData(kCFAllocatorDefault, (CFDataRef)certificateData);
+    if (certificate == NULL)
+        NSLog (@"SecCertificateCreateWithData failled");
+    
 	// Create identity.
 	result = SecIdentityCreateWithCertificate(keychain, certificate, &identity);// NSLog(@"SecIdentityCreateWithCertificate(): %d", result);
 	
@@ -128,13 +128,16 @@ - (void)disconnect {
 	result = SSLClose(context);// NSLog(@"SSLClose(): %d", result);
 	
 	// Release identity.
-	CFRelease(identity);
+    if (identity != NULL)
+        CFRelease(identity);
 	
 	// Release certificate.
-	CFRelease(certificate);
+    if (certificate != NULL)
+        CFRelease(certificate);
 	
 	// Release keychain.
-	CFRelease(keychain);
+    if (keychain != NULL)
+        CFRelease(keychain);
 	
 	// Close connection to server.
 	close((int)socket);
@@ -194,7 +197,9 @@ - (IBAction)push:(id)sender {
 	
 	// Send message over SSL.
 	size_t processed = 0;
-	OSStatus result = SSLWrite(context, &message, (pointer - message), &processed);// NSLog(@"SSLWrite(): %d %d", result, processed);
+	OSStatus result = SSLWrite(context, &message, (pointer - message), &processed);
+    if (result != noErr)
+        NSLog(@"SSLWrite(): %d %zd", result, processed);
 	
 }
 
diff --git a/Classes/ioSock.c b/Classes/ioSock.c
index 53f52ac..5ca781d 100755
--- a/Classes/ioSock.c
+++ b/Classes/ioSock.c
@@ -288,7 +288,7 @@ OSStatus AcceptClientConnection(
 {  
 	struct sockaddr_in  addr;
 	int					sock;
-    int                 len;
+    socklen_t            len;
 	
     len = sizeof(struct sockaddr_in);
     sock = accept((int)listenSock, (struct sockaddr *) &addr, &len);
@@ -413,7 +413,7 @@ OSStatus SocketWrite(
 	if(oneAtATime && (*dataLength > 1)) {
 		UInt32 i;
 		UInt32 outLen;
-		UInt32 thisMove;
+		size_t thisMove;
 		
 		outLen = 0;
 		for(i=0; i<dataLen; i++) {
diff --git a/PushMeBaby.xcodeproj/project.pbxproj b/PushMeBaby.xcodeproj/project.pbxproj
index d7d171d..e98af1d 100644
--- a/PushMeBaby.xcodeproj/project.pbxproj
+++ b/PushMeBaby.xcodeproj/project.pbxproj
@@ -248,11 +248,12 @@
 		C01FCF4F08A954540054247B /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = "$(ARCHS_STANDARD_32_BIT)";
+				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
 			};
@@ -261,10 +262,11 @@
 		C01FCF5008A954540054247B /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = "$(ARCHS_STANDARD_32_BIT)";
+				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				SDKROOT = macosx;
 			};
 			name = Release;