I just upgraded to the jwplayer 6 and was amazed that all the custom player sizes were gone on all article pages.
All was back to default. This is crazy stuff.
I just worked my way through 1500+ articles to migrate/replace the previous player with your jwplayer because it looked promising. Especially the Google tracking was great.
And now after one month after our migration you come up with an upgrade that destroys all the custom-players that I made for lets say article pages and the home page and also stripped the Google Analytics. I'm pulling my hair out!