qr报表问题本人源程序，前两天调试正常，今天不知道做了什么改动，F9运行时出现如下错误：
Project Proj1.exe raised exception class EReadError with message"property ExtendedDuplex dose not exist."Process stopped.F7单步跟踪，发现，在含有报表的那页初始化有问题，提示如下：
Error reading
FormPrt1.PrinterSettings.ExtendedDuplex Property ExtendedDuplex dose not exist,ignore the error and continue?NOTE:ignore the error may cause components to be deleted or property values to be lost.~~~~~~~~~~
是什么原因，哪位高人指点指点先
Project Proj1.exe raised exception class EReadError with message"property ExtendedDuplex dose not exist."Process stopped.F7单步跟踪，发现，在含有报表的那页初始化有问题，提示如下：
Error reading
FormPrt1.PrinterSettings.ExtendedDuplex Property ExtendedDuplex dose not exist,ignore the error and continue?NOTE:ignore the error may cause components to be deleted or property values to be lost.~~~~~~~~~~
是什么原因，哪位高人指点指点先
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