[Japo]

So you're running it from your original CD? Chances are that you haven't mounted your CD unit in DOSBox, check the tutorials as how to do it.

If that's not it (but it probably is...), run the configuration program, or open the crusader.cfg file with a plain text editor (like Windows notepad), and check that the path to the clips is correct, _specially_ if your CD is not in the D: unit. (I'm talking from memory here.)