c# 创建项目时提示：未能正确加载“microsoft.data.entity.design.bootstrappackage

vs 2005 ,vs 2008, vs 2010,安装后有时出现这个错误（我的机器装的x64的win7），很烦人。找了很多地方都不能解决。其实说起来还是开发国家牛，轻易就解决了这个问题。其实出现这个问题的原因并不是卸载不彻底，而是做了相关的注册表清理，将vs工具箱所依赖的设置改变了。具体原因本人不甚了解，仅附上解决办法：

reg query HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0AutoLoadPackages{adfc4e66-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0AutoLoadPackages{93694fa0-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0Packages{7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /s

reg query HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0AutoLoadPackages{adfc4e66-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0AutoLoadPackages{93694fa0-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0Packages{7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /s

reg query HKEY_CURRENT_USERSOFTWAREMicrosoftVisualStudio10.0_ConfigAutoLoadPackages{adfc4e66-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query delete HKEY_CURRENT_USERSOFTWAREMicrosoftVisualStudio10.0_ConfigAutoLoadPackages{93694fa0-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_CURRENT_USERSOFTWAREMicrosoftVisualStudio10.0_ConfigPackages{7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /s

reg delete HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0AutoLoadPackages{adfc4e66-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /f 
reg delete HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0AutoLoadPackages{93694fa0-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /f
reg delete HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0Packages{7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /va /f 

reg delete HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0AutoLoadPackages{adfc4e66-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /f 
reg delete HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0AutoLoadPackages{93694fa0-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /f
reg delete HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0Packages{7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /va /f 

reg delete HKEY_CURRENT_USERSOFTWAREMicrosoftVisualStudio10.0_ConfigAutoLoadPackages{adfc4e66-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /f 
reg delete HKEY_CURRENT_USERSOFTWAREMicrosoftVisualStudio10.0_ConfigAutoLoadPackages{93694fa0-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /f
reg delete HKEY_CURRENT_USERSOFTWAREMicrosoftVisualStudio10.0_ConfigPackages{7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /va /f 


reg query HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0AutoLoadPackages{adfc4e66-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0AutoLoadPackages{93694fa0-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0Packages{7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /s

reg query HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0AutoLoadPackages{adfc4e66-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0AutoLoadPackages{93694fa0-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0Packages{7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /s

reg query HKEY_CURRENT_USERSOFTWAREMicrosoftVisualStudio10.0_ConfigAutoLoadPackages{adfc4e66-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query delete HKEY_CURRENT_USERSOFTWAREMicrosoftVisualStudio10.0_ConfigAutoLoadPackages{93694fa0-0397-11d1-9f4e-00a0c911004f} /v {7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} 
reg query HKEY_CURRENT_USERSOFTWAREMicrosoftVisualStudio10.0_ConfigPackages{7A4E8D96-5D5B-4415-9FAB-D6DCC56F47FB} /s

 

将上述代码复制到cmd下即可~如果一般不行来两遍，另外附上网址，方便以后解决类似的情况。