解析的时候出现内存问题

下面的XML解析代码报出内存警告,不知道应该怎么解决,请高手帮忙。

if  ([elementName isEqualToString:@"page_details"])
    {
        IstructPageDetails *objIstructPageDetails = [[IstructPageDetails alloc] initwithIstructPageDetails:attributeDict];
        [m_objmuteArrOutput addObject:objIstructPageDetails];
        [objIstructPageDetails release];

    }

警告: Incorrect decrement of the reference count of an object that is not owned at this point by the caller

initwithIstructPageDetails 应该是initWithIstructPageDetails:helps 因为分析器要根据cocoa的命名规则。