final version can't open jpeg

[93interactive]

Hello,

i try to build a windows application that reads jpegs on pre built windows version of qt 4.5 (2009.03) with qt creator.

on the development system everything works fine, but as soon as i try the application on a windows with no qt installed, reading jpeg files failes.

i read the help about deployment on windows and tried the following:

copy imageformats from qt to applications dir 'imageformats'
copy imageformats from qt to applications dir 'plugins/imageformats'

both with or without adding:

a.addLibraryPath(a.applicationDirPath())

to main.cpp

still does not open jpeg images on the target system, what am i missing?