as I can see all V-Play requirements are met in your installation, in general two or more co-existing Qt SDKs should also be no problem. It however looks like you’ve installed / you’re using Qt version 4.8.0 in the current SDK configuration.
Could you please:
- Open the SDKMaintenanceTool in your root installation directory and check that Qt 4.8.1 is installed (like in this screenshot: http://d.pr/i/IjvA ).
- Post the clean output of the Compile Output tab in Qt Creator after running Build -> Run qmake
- Check under the left Projects tab in Qt Creator that Qt version 4.8.1 is selected