On Nov 26, 2013, at 9:47 AM, koko wrote:

> NSTask *task;
> task = [[NSTask alloc] init];
> [task setLaunchPath:rootScriptPath];  
> [task setArguments:[NSArray arrayWithObjects:rootpath, nil]]; 
> [task waitUntilExit];
> [task launch];
> [task release];

You have the invocation of -launch and -waitUntilExit in the wrong order.  I 
have no idea what it could mean to wait for the task to exit before it's 
launched.  I wouldn't be surprised if that's what is throwing the exception.

That said, I agree with the suggestion to delete the files from within the 
parent process rather than launching a script to do it.

Regards,
Ken


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