diff --git a/English.lproj/InfoPlist.strings b/English.lproj/InfoPlist.strings
index 2b30cc1..fc535c0 100644
Binary files a/English.lproj/InfoPlist.strings and b/English.lproj/InfoPlist.strings differ
diff --git a/GeneratePreviewForURL.m b/GeneratePreviewForURL.m
index a8cdb35..2f500c3 100644
--- a/GeneratePreviewForURL.m
+++ b/GeneratePreviewForURL.m
@@ -12,14 +12,16 @@ OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview,
 							   CFURLRef url, CFStringRef contentTypeUTI, 
 							   CFDictionaryRef options)
 {
-    CFDataRef data = (CFDataRef) renderMarkdown((NSURL*) url);
+    @autoreleasepool {
+    NSData *data = renderMarkdown((__bridge NSURL*) url);
 
     if (data) {
-		CFDictionaryRef props = (CFDictionaryRef) [NSDictionary dictionary];
-        QLPreviewRequestSetDataRepresentation(preview, data, kUTTypeHTML, props);
+		NSDictionary *props = [[NSDictionary alloc] init];
+        QLPreviewRequestSetDataRepresentation(preview, (__bridge CFDataRef)data, kUTTypeHTML, (__bridge CFDictionaryRef)props);
     }
 
     return noErr;
+    }
 }
 
 void CancelPreviewGeneration(void* thisInterface, QLPreviewRequestRef preview)
diff --git a/GenerateThumbnailForURL.m b/GenerateThumbnailForURL.m
index 07c5e90..e3b5e08 100644
--- a/GenerateThumbnailForURL.m
+++ b/GenerateThumbnailForURL.m
@@ -19,7 +19,8 @@ OSStatus GenerateThumbnailForURL(void *thisInterface,
 								 CFURLRef url, CFStringRef contentTypeUTI, 
 								 CFDictionaryRef options, CGSize maxSize)
 {
-    NSData *data = renderMarkdown((NSURL*) url);
+    @autoreleasepool {
+    NSData *data = renderMarkdown((__bridge NSURL*) url);
 
     if (data) {
 		NSRect viewRect = NSMakeRect(0.0, 0.0, 600.0, 800.0);
@@ -29,7 +30,7 @@ OSStatus GenerateThumbnailForURL(void *thisInterface,
                             NSMakeSize((maxSize.width * (600.0/800.0)), 
                                        maxSize.height));
 
-        WebView* webView = [[[WebView alloc] initWithFrame: viewRect] autorelease];
+        WebView* webView = [[WebView alloc] initWithFrame: viewRect];
 		[webView scaleUnitSquareToSize: scaleSize];
         [[[webView mainFrame] frameView] setAllowsScrolling:NO];
         [[webView mainFrame] loadData: data
@@ -62,6 +63,7 @@ OSStatus GenerateThumbnailForURL(void *thisInterface,
     }
 
     return noErr;
+    }
 }
 
 void CancelThumbnailGeneration(void* thisInterface, QLThumbnailRequestRef thumbnail)
diff --git a/QLMarkdown.xcodeproj/project.pbxproj b/QLMarkdown.xcodeproj/project.pbxproj
index d395f71..6c6715b 100644
--- a/QLMarkdown.xcodeproj/project.pbxproj
+++ b/QLMarkdown.xcodeproj/project.pbxproj
@@ -43,7 +43,7 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
-		089C167EFE841241C02AAC07 /* English */ = {isa = PBXFileReference; fileEncoding = 10; lastKnownFileType = text.plist.strings; name = English; path = English.lproj/InfoPlist.strings; sourceTree = "<group>"; };
+		089C167EFE841241C02AAC07 /* English */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.strings; name = English; path = English.lproj/InfoPlist.strings; sourceTree = "<group>"; };
 		08FB77B6FE84183AC02AAC07 /* main.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = main.c; sourceTree = "<group>"; };
 		0A80BFA40E21A2E200C8BF14 /* markdown.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = markdown.h; sourceTree = "<group>"; };
 		0A80BFA60E21A2ED00C8BF14 /* markdown.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = markdown.m; sourceTree = "<group>"; };
@@ -109,6 +109,7 @@
 			);
 			name = QLMarkdown;
 			sourceTree = "<group>";
+			usesTabs = 0;
 		};
 		089C1671FE841209C02AAC07 /* External Frameworks and Libraries */ = {
 			isa = PBXGroup;
@@ -333,36 +334,30 @@
 		2CA3261F0896AD4900168862 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CLANG_ENABLE_OBJC_ARC = YES;
 				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = NO;
 				GCC_DYNAMIC_NO_PIC = NO;
-				GCC_MODEL_TUNING = G5;
-				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				HEADER_SEARCH_PATHS = "./discount-config";
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = /Library/QuickLook;
 				PRODUCT_NAME = QLMarkdown;
-				SDKROOT = macosx;
-				VALID_ARCHS = "i386 x86_64";
 				WRAPPER_EXTENSION = qlgenerator;
-				ZERO_LINK = YES;
 			};
 			name = Debug;
 		};
 		2CA326200896AD4900168862 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CLANG_ENABLE_OBJC_ARC = YES;
 				COMBINE_HIDPI_IMAGES = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
-				GCC_MODEL_TUNING = G5;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				HEADER_SEARCH_PATHS = "./discount-config";
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = /Library/QuickLook;
 				PRODUCT_NAME = QLMarkdown;
-				SDKROOT = macosx;
-				VALID_ARCHS = "i386 x86_64";
 				WRAPPER_EXTENSION = qlgenerator;
 			};
 			name = Release;
@@ -370,11 +365,18 @@
 		2CA326230896AD4900168862 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				ONLY_ACTIVE_ARCH = YES;
-				SDKROOT = "";
+				SDKROOT = macosx;
+				STRIP_INSTALLED_PRODUCT = NO;
 				WARNING_CFLAGS = "-Wall";
 			};
 			name = Debug;
@@ -382,11 +384,15 @@
 		2CA326240896AD4900168862 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS_STANDARD_32_64_BIT_PRE_XCODE_3_1 = "ppc i386 ppc64 x86_64";
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				MACOSX_DEPLOYMENT_TARGET = 10.6;
-				SDKROOT = "";
+				SDKROOT = macosx;
 				WARNING_CFLAGS = "-Wall";
 			};
 			name = Release;
diff --git a/markdown.m b/markdown.m
index e3a2c2e..27fe5a4 100644
--- a/markdown.m
+++ b/markdown.m
@@ -3,7 +3,8 @@
 
 NSData* renderMarkdown(NSURL* url)
 {
-    NSString *styles = [NSString stringWithContentsOfFile:[[NSBundle bundleWithIdentifier: @"com.fiatdev.QLMarkdown"]
+    @autoreleasepool {
+    NSString *styles = [[NSString alloc] initWithContentsOfFile:[[NSBundle bundleWithIdentifier: @"com.fiatdev.QLMarkdown"]
                                                            pathForResource:@"styles" ofType:@"css"]
                                                  encoding:NSUTF8StringEncoding
                                                     error:nil];
@@ -11,7 +12,7 @@
     NSStringEncoding usedEncoding = 0;
     NSError *e = nil;
 
-    NSString *source = [NSString stringWithContentsOfURL:url usedEncoding:&usedEncoding error:&e];
+    NSString *source = [[NSString alloc] initWithContentsOfURL:url usedEncoding:&usedEncoding error:&e];
 
     if (usedEncoding == 0) {
         NSLog(@"Wasn't able to determine encoding for file “%@”", [url path]);
@@ -27,4 +28,5 @@
 
     free(output);
     return [html dataUsingEncoding:NSUTF8StringEncoding];
+    }
 }
\ No newline at end of file