diff --git a/LineBreak.xcodeproj/project.pbxproj b/LineBreak.xcodeproj/project.pbxproj
index 9330e2a..dd6317a 100755
--- a/LineBreak.xcodeproj/project.pbxproj
+++ b/LineBreak.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 42;
+	objectVersion = 46;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -201,9 +201,16 @@
 /* Begin PBXProject section */
 		29B97313FDCFA39411CA2CEA /* Project object */ = {
 			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 0420;
+			};
 			buildConfigurationList = 036BFF5A09D4864F003A7A3E /* Build configuration list for PBXProject "LineBreak" */;
-			compatibilityVersion = "Xcode 2.4";
+			compatibilityVersion = "Xcode 3.2";
+			developmentRegion = English;
 			hasScannedForEncodings = 1;
+			knownRegions = (
+				en,
+			);
 			mainGroup = 29B97314FDCFA39411CA2CEA /* LineBreak */;
 			projectDirPath = "";
 			projectRoot = "";
@@ -278,10 +285,10 @@
 		036BFF5309D4864D003A7A3E /* Development */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				COPY_PHASE_STRIP = NO;
 				FRAMEWORK_SEARCH_PATHS = "";
 				GCC_DYNAMIC_NO_PIC = NO;
-				GCC_ENABLE_FIX_AND_CONTINUE = YES;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
@@ -291,6 +298,7 @@
 				LIBRARY_SEARCH_PATHS = "";
 				OTHER_LDFLAGS = "";
 				PRODUCT_NAME = LineBreak;
+				SDKROOT = macosx;
 				SECTORDER_FLAGS = "";
 				WARNING_CFLAGS = (
 					"-Wmost",
@@ -305,9 +313,9 @@
 		036BFF5409D4864D003A7A3E /* Deployment */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				COPY_PHASE_STRIP = YES;
 				FRAMEWORK_SEARCH_PATHS = "";
-				GCC_ENABLE_FIX_AND_CONTINUE = NO;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
 				HEADER_SEARCH_PATHS = "";
@@ -316,6 +324,7 @@
 				LIBRARY_SEARCH_PATHS = "";
 				OTHER_LDFLAGS = "";
 				PRODUCT_NAME = LineBreak;
+				SDKROOT = macosx;
 				SECTORDER_FLAGS = "";
 				WARNING_CFLAGS = (
 					"-Wmost",
@@ -330,6 +339,7 @@
 		036BFF5509D4864D003A7A3E /* Default */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				FRAMEWORK_SEARCH_PATHS = "";
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
@@ -339,6 +349,7 @@
 				LIBRARY_SEARCH_PATHS = "";
 				OTHER_LDFLAGS = "";
 				PRODUCT_NAME = LineBreak;
+				SDKROOT = macosx;
 				SECTORDER_FLAGS = "";
 				WARNING_CFLAGS = (
 					"-Wmost",
@@ -357,7 +368,7 @@
 					i386,
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.4;
-				SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
 			};
 			name = Development;
 		};
@@ -369,7 +380,7 @@
 					i386,
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.4;
-				SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
 			};
 			name = Deployment;
 		};
@@ -381,7 +392,7 @@
 					i386,
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.4;
-				SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
 			};
 			name = Default;
 		};
diff --git a/ProtectionPanel.m b/ProtectionPanel.m
index 7941c6a..9e77dfb 100755
--- a/ProtectionPanel.m
+++ b/ProtectionPanel.m
@@ -107,17 +107,18 @@ -(IBAction)addExtension:(id)sender {
 }
 
 -(IBAction)removeSelection:(id)sender {
-  int i;
   NSMutableArray *currentFileExtensions;
-  NSArray *selections = [[mExtensionsTable selectedRowEnumerator] allObjects];
+  NSIndexSet *selections = [mExtensionsTable selectedRowIndexes];
   if ([self isExcludeSelected]) {
     currentFileExtensions = [NSMutableArray arrayWithArray:[preferences arrayForKey:NonTextFileExtensionsKey]];
   }
   else {
     currentFileExtensions = [NSMutableArray arrayWithArray:[preferences arrayForKey:TextFileExtensionsKey]];
   }
-  for (i = ([selections count] - 1); i >= 0; i--) {
-    [currentFileExtensions removeObjectAtIndex:[[selections objectAtIndex:i] intValue]];
+  NSUInteger i = [selections lastIndex];
+  while (i != NSNotFound) {
+    [currentFileExtensions removeObjectAtIndex:i];
+    i = [selections indexLessThanIndex:i];
   }
   if ([self isExcludeSelected]) {
     [preferences setObject:[NSArray arrayWithArray:currentFileExtensions] forKey:NonTextFileExtensionsKey];