When you mention running count, are you keeping an int or something to keep track of thread progress? If so remember to use atomic operations to update the count from multiple threads to prevent data corruption. As for NSAlert, a general rule is not to interact with the UI from any threads other than the main. Use performSelectorOnMainThread: to forward messages to the main thread.

On May 20, 2008, at 5:07 AM, Micha Fuhrmann wrote:

Hi everyone,

some users are reporting a crash at start. From the logs it seems that the sys is recognizing multiple running of the app, but from there I have no clue as to how to remedy.

Any help greatly appreciated.

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