SignTool Error: An error occurred while attempting to sign...

问题： 重装系统后打开工程，编译时发生错误，错误信息： Error 5 An error occurred while signing: Failed to sign bin/Debug/app.publish//setup.exe. SignTool Error: ISignedCode::Sign returned error: 0x80880253

 The signer's certificate is not valid for signing.

SignTool Error: An error occurred while attempting to sign: bin/Debug/app.publish//setup.exe PublishBook
编程环境：vs2008 EN
通过GOOGLE查找发现国内兄弟遇到这类问题较少，在外国网站上找到了解决答案，放到这里以备各位兄弟查询
解决办法：      -Go to the property of the Project     -Select the Signing tab     -Click 'create test certificate' button     it will ask for new password 2 times and you have another 1 year extension!

在我们Build 工程里 是 D：/DigitalSign 下数字证书 出了问题，也许文件太老，也许缺少它。