When I look at JPEG file exported to a USB stick on my LG SMART TV i see two files. One JPEG file which can be viewed ok and one extra file named ._XXX. This extra file with ._ (dot , underscore) seems to have no content when looking on the tv. It can not be seen with the finder on my MAC although i have “hidden files” enabled in the finder. This does NOT appear on files untouched by APERTURE.  What am i doing wrong. I have tried  lots of export preset options without success.