On Sep 20, 2010, at 10:06 AM, ico wrote:

> can someone tell me what problem is, NSInvocationOperation allocation is
> even failed, I guess it maybe a simple problem

Not without a crash report. You didn't release the target before creating the 
invocation operation, did you? Also, if you're using Snow Leopard, then try 
running your app in Instruments using the zombies instrument. If the crash was 
caused by accessing a dead object, then Instruments will show you the object's 
history.

Nick Zitzmann
<http://www.chronosnet.com/>

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