Check your spelling.
If its coming up white when you have everything set right, then its not finding the file.
Check your spelling of the path and file names carefully.
I don't know what else it could be if the file is not corrupted.
Don't forget to start with fresh .bin and .dbo files too.
Can we see that portion of your code to see how you have it scripted?
Nevermind, I'm sure you don't have a typo in your script.
What exactly is it, that is having its texture changed?
You said entity, but not a character right?
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Whatever you can imagine, you can animate. --- Walt Disney
All too easy. --- Darth Vader
Just do it! --- Nike