QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
    db.setDatabaseName("data.db");
    if (!db.open()) {
            qDebug() << "Can't open a database";
    }
    Report::ReportInterface* report = 0;
    Report::ReportEngine reportEngine;
    report = reportEngine.loadReport("D:/QT/print/Report.bdrt");
    if (!report) {
            qDebug() << "Can't open report file";
            return;
    }
и вот это выводит результат! 
Запускается D:\QT\print\print\release\print.exe...
"The file 'D:/QT/print/print/data.db' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/main.cpp' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/mainwindow.cpp' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/mainwindow.h' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/mainwindow.ui' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/Makefile' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/Makefile.Debug' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/Makefile.Release' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/print.exe' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/print.pro' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/print.pro.user' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/Report.bdrt' is not a valid Qt plugin." 
"The file 'D:/QT/print/print/ui_mainwindow.h' is not a valid Qt plugin." 
"Can't find StdReport" 
Can't open report file 
Как с этим быть