diff --git a/Archiver.m b/Archiver.m
index ff38994..d51fb51 100644
--- a/Archiver.m
+++ b/Archiver.m
@@ -14,7 +14,7 @@ + (id)retrieve:(NSString *)key {
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
     NSString *documentsDirectory = [paths objectAtIndex:0];
     NSString *filePath = [documentsDirectory stringByAppendingString:[NSString stringWithFormat:@"/%@.archive", key]];
-    return [[[NSKeyedUnarchiver unarchiveObjectWithFile:filePath] retain] autorelease];
+    return [NSKeyedUnarchiver unarchiveObjectWithFile:filePath];
 }
 
 + (BOOL)persist:(id)object key:(NSString *)key {
diff --git a/NSObject+NSCoding.h b/NSObject+NSCoding.h
old mode 100644
new mode 100755
index 64c1fde..5acf3b3
--- a/NSObject+NSCoding.h
+++ b/NSObject+NSCoding.h
@@ -16,3 +16,15 @@
 - (NSDictionary *)properties;
 
 @end
+
+#define AUTO_ENCODE - (void)encodeWithCoder:(NSCoder *)coder { \
+    [self autoEncodeWithCoder:coder]; \
+}
+
+
+#define AUTO_DECODE - (id)initWithCoder:(NSCoder *)coder { \
+    if ((self = [super init])) { \
+        [self autoDecode:coder]; \
+    } \
+    return self; \
+}
diff --git a/NSObject+NSCoding.m b/NSObject+NSCoding.m
index 6649e88..ee74a56 100644
--- a/NSObject+NSCoding.m
+++ b/NSObject+NSCoding.m
@@ -8,7 +8,7 @@
 
 #import "NSObject+NSCoding.h"
 #import <objc/runtime.h>
-
+#import <CoreGraphics/CoreGraphics.h>
 
 @implementation NSObject (NSCoding)