No valid kits found

[tony67]

Hi All,
I've been working on a project for a while now. After lunch I went to reopen the project and it opened configuration reporting "no valid kits found", there was an option to import the project, so I pressed the import button, however this just opens a message box with
[code]
No build found in /home/Tools/ConstructionKit_GUI matching project /home/Tools/ConstructionKit_GUI/ContructionKit_GUI/ContructionKit_GUI.pro.
[/code]

I'm at a loss to what's causing this and how to fix it can anyone advise please. I can see a all my files and folders.
Thanks :)

[tony67]

Sorted it. It had it set itself up to be QT 4 rather than Qt 5 also the desktop check box was unchecked. How is it possible to have reverted to an old qt?