Are you talking about a preset file? As in the .material file?
Did you make sure that all of the material names within the file have either the lower or upper case A? That may be your issue.
If you are putting you username into the .material file, let's say for the body; then you would have something like this:
material preset_4_bodyMatL
{
technique
{
pass
{
texture_unit
{
texture preset_4body.jpg
}
}
}
}
What I highlighted in
green and
yellow are the parts that make presets possible. You need the correct image name (and extension, if transparent) and if you are specifying what body part it is, to make it easier to organize, then the green text should be your username or whatever you choose (personally, I put the character name). You must do this for every single .material code, or at least the ones you are working on/using for your preset. I would suggest copying the same name for your material, the green text, before each underscore_partmatR/L so you don't need to fuss with it later.
I truly wish I was of help. If you have further question, or I was totally wrong, then tell me.