If you have trouble to build Vaa3D executable file, you can directly use our precomplied one, which I mentioned in the last response.
1. Download our released Vaa3D from https://github.com/Vaa3D/release/release...
2. Unzip the file and install it on your machine.
3. Compile your plugin using Qt.4.7.2.
4. Copy your plugin folder including the dll file to your installed Vaa3D plugin folder (e.g. C:\Program Files\Vaa3D-3.2\bin\plugins\).

Hope it helps.

Zhi