Failed to move file error in ASIHTTPRequest

I am using ASIHTTPRequest for downloading file from server but its giving error

Failed to move file from '/Users/admin/Library/Application Support/iPhone Simulator/3.1.3/Applications/8650FFE4-9C18-425C-9CEE-7392FD788E6D/Documents/temp/test.zip.download' to '/Users/admin/Library/Application Support/iPhone Simulator/3.1.3/Applications/8650FFE4-9C18-425C-9CEE-7392FD788E6D/Documents/test.zip'

can any body tell mw this error what wrong in my code......

    NSURL *url = [NSURL URLWithString:@"http://wordpress.org/开发者_如何学编程latest.zip"];
    ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
    [request setDelegate:self];

NSArray *dirArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,    NSUserDomainMask, YES);

NSString *path = [NSString stringWithFormat:@"%@/test.zip", [dirArray objectAtIndex:0]];

//NSString *tempPath = [NSString stringWithFormat:@"%@test.zip", NSTemporaryDirectory()]    ;

NSString *tempPath =[NSString stringWithFormat:@"%@/temp/test.zip.download", [dirArray objectAtIndex:0]];

// The full file will be moved here if and when the request completes successfully
[request setDownloadDestinationPath:path];
[request setTemporaryFileDownloadPath:tempPath];
[request setDidFinishSelector:@selector(requestDone:)];
[request setDidFailSelector:@selector(requestWentWrong:)];
[[self queue] addOperation:request]; //queue is an NSOperationQueue

do you already have a temp.zip in that location ?

It also happens if you didn't set the destination path correctly, using this method setDownloadDestinationPath: of ASIHTTPRequest...

Your call [request setTemporaryFileDownloadPath:tempPath]; is not necessary, and is more than likely the source of your error.