I am trying to work out what I have done wrong!
Using the import script and having to make changes due to adding of MasterCategory and Brand :
exec("php ./register.php AdvancedMP3Players.xml 'xml|PRODUCTS/PRODUCT/' 'Advanced MP3Players' 'PRODUCTNAME' 'DESCRIPTION' 'IMAGEURL' 'DEEPLINK' 'PRICE' '' 'MASTERCATEGORY' '' 'BRAND'");I have left the empty '' in as these values arent required.
You've got them the wrong way round; it should go 'MASTERCATEGORY' '' 'BRAND' ''.