My spriteSheet animation crashes my app - iphone

Question

so I'm creating a sprite every second but now I would like to replace this sprite by a spriteSheetAnimation. but when I run this code my app crashes :
- (void)spawnCat {
CCSpriteBatchNode *spriteSheet2 = [CCSpriteBatchNode batchNodeWithFile:#"AnimBulle.png"];
[self addChild:spriteSheet2];
// Load up the frames of our animation
NSMutableArray *walkAnimFrames = [NSMutableArray array];
for(int i = 1; i <= 8; ++i) {
[walkAnimFrames addObject:[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:#"AnimBulle%d.png", i]]];
}
CCAnimation *walkAnim = [CCAnimation animationWithFrames:walkAnimFrames
delay:0.1f];
[target runAction:_walkAction];
target.tag = 1;
[_targets addObject:target];
[self addBoxBodyForSprite:target];
[spriteSheet2 addChild:target z:0 tag:1];
id actionMove = [CCMoveTo actionWithDuration:actualDuration
position:ccp(240, 160)];
id actionMoveDone = [CCCallFuncN actionWithTarget:self
selector:#selector(spriteDone:)];
[target runAction:[CCSequence actions:actionMove, actionMoveDone, nil]];
}

Answer 1

EDIT:
From the kind of error you get (not enough stack traces), you have an inifinite recursion (i.e., a method that ends up calling itself, either directly or indirectly). The code in spawnCat does not seem to entail such an infinite recursion, so the problem must be somewhere else.
How do you call spawnCat? could you put some NSLog traces in the methods that are executed to create the animation, so that you see if someone keeps calling itself?
ORIGINAL ANSWER:
Are you sure this is what you meant?
CCAnimation *walkAnim = [CCAnimation animationWithFrames:walkAnimFrames delay:0.1f];
[target runAction:_walkAction];
I can't see _walkAction initialization, but I would expect you do that after creating the animation by doing something like:
CCAnimation *walkAnim = [CCAnimation animationWithFrames:walkAnimFrames delay:0.1f];
_walkAction = [CCAnimate actionWithAnimation:walkAnim];
[target runAction:_walkAction];

Answer 2

The only thing i can see in the code is the possibility that your spriteFrame is not found. When you try to add nil to an array, you can get nasty outcomes. I would amend the loop as follows (logging helps).
for(int i = 1; i <= 8; ++i) {
NSString *sfn = [NSString stringWithFormat:#"AnimBulle%d.png", i];
CCSpriteFrame *sf = [[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:sfn];
if(sf) {
[walkAnimFrames addObject:sf];
} else {
CCLOGERROR(#"%#<spawnCat> : *** Sprite frame named [%#] not found in cache, bailing out.",self.class,sfn);
return; // ok here, nothing is retained before this may be executed
}
}
Also, can you ensure that you actually loaded the spriteFrameCache with the .plist and texture before invoking this AND that you dont removeUnusedSpriteFrames from the cache anywhere else in the run loop.