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DLP Composer (TM) 12.8.4软件打开工程报错 Microsoft Excel is not available 。some features will not be available

你好,吴博士。我的系统是win7 64位,以前使用这个composer软件都是没有问题的,突然有一天软件在打开一个工程的时候需要7分钟,才提示一个报错信息,然后才能打开工程!把软件卸载重新安装没有解决,我手动安装了office 2010 也没有解决,请问这个问题怎么解决,我不想重新安装系统!!