Setting SneakyButton sprite using CCFrameCache
Is there a way to set the SneakyButton sprites from CCFrameCache? 
Nothing shows up when I try :

    [exitBase.defaultSprite setDisplayFrame:[[CCSpriteFrameCache sharedSpriteFrameCache] 
                                             spriteFrameByName:@"exitUp.png"]];

It works fine with a ```[CCSprite spriteWithFile:@""]``` statement

Thanks

Setting SneakyButton sprite using CCFrameCache
===

Is there a way to set the SneakyButton sprites from CCFrameCache? 
Nothing shows up when I try :

    [exitBase.defaultSprite setDisplayFrame:[[CCSpriteFrameCache sharedSpriteFrameCache] 
                                             spriteFrameByName:@"exitUp.png"]];

It works fine with a ```[CCSprite spriteWithFile:@""]``` statement

Thanks
