I tested it in DBC 1.13 version from 2002. Did you test the example model that you attached to this thread? Like I wrote previously, it works fine. I ask if you tested it because it may be another model you are having problems with and you are assuming the cube is behaving the same way so you didn't test it. There could be a difference between the cube you attached and the model you are having problems with.
In the model you are having problems with, open the X file in a text editor and search through it for the name of your texture file. This should be contained under a block of code that starts with Material {
and in
TextureFileName {
If you can't find the file name or if it isn't only 8 characters or less long with a 3 character extension (ex: image.bmp) , then that would be one reason there's no texture. Also check for a block heading that reads
MeshTextureCoords {
And has a series of numbers after it something like
164;
.0054345; .5544445;,
.0342420; 1.434293;,
etc
If these aren't there, your model has no UV coordinates and the object will only be colored with maybe the first pixel of the texture.
Enjoy your day.