Zend certified PHP/Magento developer

Build not configured correctly Qt + Eclipse

I wanted to use the capabilities of Qt in eclipse. I downloaded Qt5.1 and Qt-integration. I registered paths to qmake for mingw in PATH. At the first build, the project builds correctly, but if I close the project in the project branch, and then open it and try to build, I get a Build not configured correctly error. I’ve been trying for 3 weeks. I can’t understand what it is missing.