What was the exception? Maybe the display mode you requested could not be found.
Didn't have the source code of the game to compile it on my girlfriend notebook, I just installed eclipse, created a slick2d project and tried a very simple game, just using g.drawString with setDisplay(800, 600, false). Didn't work, I don't remember the exact exception (I'll look further tomorrow) but was something about the display.
I'll import the entire game project tomorrow and try to compile it on the notebook and see what happens.
Are you using Image.getGraphics anywhere? It requires FBO/Pbuffer, which may not work on older cards.
Nope. But now I remember that to draw animations I used: animation.getCurrentFrame().draw(x,y); (basically, Image.draw)
¿Could be that the problem?
Don't know what difference is with g.drawImage() of slick2d.