There's no Qt version assigned to this project for platform Win32.

1、错误提示内容

  ---------------------------
Qt Visual Studio Add-in
---------------------------
The following error occured:

There‘s no Qt version assigned to this project for platform Win32. Please use the ‘change Qt version‘ feature and choose a valid Qt version for this platform.
---------------------------
OK   
---------------------------

2、解决方法

右键VS的解决方案，选择“Change QT Version”---》选择当前的QT版本

There's no Qt version assigned to this project for platform Win32.

原文：http://www.cnblogs.com/yuygt/p/6293911.html