Here is a silly problem: I tried to make a .sis file of a test app with Qt creator. That succeeded, but the .sis installation to a device failed as I do not yet have proper UID. That is still OK, but now every time that I want to debug the app in device, Qt creator starts the installation process again, which still fails of course. So now I can not debug in device anymore.
How to get the Qt creator forget the installation?