This is the report about the bug of transparent of skin.
It have already become a problem at skin forum.
"Help me with a skin problem, take a look!"
http://forum.bsplayer.org/viewtopic.php?t=6041
It becomes transparent by one pixel extra at the left.
It looks it's caused by Build807.
This report might already been done.
Since I cannot read English sentence quickly, I might miss to read it. :(