错误信息：
C:\Program Files (x86)\MSBuild\Microsoft\WiX\v3.x\Wix.CA.targets(50,5): error MSB4036: The "ReadRegistry" task was not found. Check the following: 1.) The name of the task in the project file is the same as the name of the task class. 2.) The task class is "public" and implements the Microsoft.Build.Framework.ITask interface. 3.) The task is correctly declared with <UsingTask> in the project file, or in the *.tasks files located in the "C:\Windows\Microsoft.NET\Framework\v4.0.30319" directory.
原因：安装目录由v3.5变更为v3.x
解决方法：
用
<WixTasksPath Condition=" '$(WixTasksPath)' == '' ">$(MSBuildExtensionsPath)\Microsoft\WiX\v3.x\WixTasks.dll</WixTasksPath>
<WixCATargetsPath Condition=" '$(WixCATargetsPath)' == '' AND '$(MSBuildExtensionsPath32)' != '' ">$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\wix.ca.targets</WixCATargetsPath>
<WixTasksPath Condition=" '$(WixTasksPath)' == '' AND '$(MSBuildExtensionsPath32)' != '' ">$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\WixTasks.dll</WixTasksPath>
替换
<WixCATargetsPath Condition=" '$(WixCATargetsPath)' == '' ">$(MSBuildExtensionsPath)\Microsoft\WiX\v3.5\Wix.CA.targets</WixCATargetsPath>