在用VS编写程序是第一次会跳出“Visual Studio has encountered an exception.This may be caused by an extension.
You can get more information by running the application together with the /log parameter on command line ,and then examining the file 'C:\Document and Settings\Administrator\Application Data\Microsoft\Visual Studio\10.0\ActivityLog.xml'”。按照有人方法安装“VS10-KB2251084-x86.exe”补丁后任然没效果，后来发现是注册表的问题。
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\10.0\Text Editor that has the value name "Report Exceptions". To suppress the message box, create this registry value as a DWORD and set it to 0.
HKEY_CURRENT_USER
|-------Software
|--------------Microsoft
|---------------------VisualStudio
|----------------------------10.0
|-----------------------------------Text Editor
在TextEdit上新建“Report Exceptions“的DWORD，设定值为0，完美解决。