Any special .dll for images ?

[jpn]

http://doc.trolltech.com/4.1/deploym...n-dependencies

[L.Marvell]

You need directory imageformats with image plugins (like qgif1.dll, qjpeg1.dll for windows) under dir. where your executable lies. Or try put libraries in one of directories which is in environment path but I didn't try this way.