FIXED: Bug introduced by https://github.com/cappuccino/cappuccino/commit/9fba72cbab42145dc585c01efd82ce645373c04e#diff-227ef108401c2160357ae3fc65018c65R620

The changes in CPBox were messing with the subviews encoding. This patch restores the previous behavior of CPBox.
The original bug might be reintroduced, but this was definitly not the good solution

AppKit/CPBox.j

@@ -598,8 +598,7 @@ var CPBoxTypeKey          = @"CPBoxTypeKey",
     CPBoxBorderTypeKey    = @"CPBoxBorderTypeKey",
     CPBoxTitle            = @"CPBoxTitle",
     CPBoxTitlePosition    = @"CPBoxTitlePosition",
-    CPBoxTitleView        = @"CPBoxTitleView",
-    CPBoxContentView      = @"CPBoxContentView";
+    CPBoxTitleView        = @"CPBoxTitleView";
 
 @implementation CPBox (CPCoding)
 
@@ -616,8 +615,7 @@ var CPBoxTypeKey          = @"CPBoxTypeKey",
         _titlePosition = [aCoder decodeIntForKey:CPBoxTitlePosition];
         _titleView     = [aCoder decodeObjectForKey:CPBoxTitleView] || [CPTextField labelWithTitle:_title];
 
-        _contentView   = [aCoder decodeObjectForKey:CPBoxContentView] || [[CPView alloc] initWithFrame:[self bounds]];
-        [self replaceSubview:_contentView with:[self subviews][0]];
+        _contentView   = [self subviews][0];
 
         [self setAutoresizesSubviews:YES];
         [_contentView setAutoresizingMask:CPViewWidthSizable | CPViewHeightSizable];
@@ -637,7 +635,6 @@ var CPBoxTypeKey          = @"CPBoxTypeKey",
     [aCoder encodeObject:_title forKey:CPBoxTitle];
     [aCoder encodeInt:_titlePosition forKey:CPBoxTitlePosition];
     [aCoder encodeObject:_titleView forKey:CPBoxTitleView];
-    [aCoder encodeObject:_contentView forKey:CPBoxContentView];
 }
 
 @end