s7-200 PC Accese SP6 运行后启动测试机一切正常，点击关闭测试机，弹出（226E393C-1E8E-40099-9955-2EA56A8D9D26):OPCDAServer.exe应用程序错误；
“0x05b00049”指令引用的“0xb4a35351”内存。该内存不能为“read”
故障记事本里内容如下：*** Simatic S7-200 PC Access: Start
*** Instance: D:\Program Files\Siemens\S7-200 PC Access\bin\CoreServer.dll
*** Date: 17. 9.2013
***
19:12:42,5780C3C* > GlobalInitialize
19:12:42,5780C3C* < GlobalInitialize
19:12:42,5780C3C* >DllMain DLL_PROCESS_ATTACH
19:12:42,5780C3C* 19:12:43, 150C3C* Result of IComm200 acquisition [hr=0]
19:12:43,1560C44* Result of IComm200 acquisition [hr=0]
19:12:54,9840254* >DllMain DLL_PROCESS_DETACH
19:12:54,9840254* > GlobalUninitialize
19:12:54,9840254* < GlobalUninitialize
19:12:54,9840254* 求高手高手告诉下是什么问题，急！