I know that QT Creator is a working progress project and I prefer it to Eclipse.
But sometimes the setting of the Project working env. is frustrating
I have a project and if I run it from inside Qt Creator I get " QSQl driver not loaded".
If I run it from a command prompt no problem.
Follow the .pro
Qt Code: 
  1. TEMPLATE = app
  2. TARGET = 
  3. DEPENDPATH += . \
  4.     debug \
  5.     release
  6. INCLUDEPATH += .
  7.  
  8. # Input
  9. HEADERS += chooselang.h \
  10.     data.h \
  11.     daticliente.h \
  12.     mainwindow.h \
  13.     myfilter.h
  14. FORMS += chooselang.ui \
  15.     daticliente.ui \
  16.     mainwindow.ui
  17. SOURCES += chooselang.cpp \
  18.     daticliente.cpp \
  19.     main.cpp \
  20.     mainwindow.cpp \
  21.     myfilter.cpp
  22. RESOURCES += omnivision.qrc
  23. QT += sql \
  24.     network \
  25.     svg
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And this is the output of Qt Creator:
Qt Code: 
  1. Starting C:\Users\giuseppe\Documents\Programmi\OmniVision\release\omnivision.exe...
  2. Lib Path ("C:/Qt/2010.05/qt/plugins", "C:/Users/giuseppe/Documents/Programmi/OmniVision/release") 
  3. database clienti= "C:/Users/giuseppe/Documents/Programmi/OmniVision/release/clie.db" 
  4. QSqlDatabase: QSQLITE driver not loaded
  5. QSqlDatabase: available drivers: 
  6. Problems with database clients= QSqlError(-1, "Driver not loaded", "Driver not loaded") 
  7. C:\Users\giuseppe\Documents\Programmi\OmniVision\release\omnivision.exe exited with code 0
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I put the entire sqldrivers folder inside release directory.
Any help appreciated