Am I doing something wrong?????

I have a number of suppliers images so I want to keep them in seperate directorys.

So in images/
the directorys are:
supplier1/
supplier2/
etc......

then in the sized directorys
images/small/supplier1/
images/small/supplier2/

images/medium/supplier1/
images/medium/supplier2/
etc.....


but the only images recognised are in:
images/supplier1/*
images/supplier2/*

what am I doing wrong?

The data was uploaded with easypopulate with the image column data set as "supplier1/imagename.jpg"


have I made a mistake in some other config?????