求助！ delphi xe5 无法编译问题

操作系统：windows7-64bit sp1
安装delphi xe5，但任何程序均无法编译，报如下错误：
[MSBuild Error] The "CreateProperty" task could not be instantiated from the assembly "Microsoft.Build.Tasks, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a". Please verify the task assembly has been built using the same version of the Microsoft.Build.Framework assembly as the one installed on your computer and that your host application is not missing a binding redirect for Microsoft.Build.Framework. Unable to cast object of type 'Microsoft.Build.Tasks.CreateProperty' to type 'Microsoft.Build.Framework.ITask'.
有哪个高手、大神知道如何处理，安装.net framework 2.0 4.0  均不起作用，小弟为初学delphi，请各位高手指教。