JWPlayer 4.2

I'm having troubles with the image preview when playing a video. The video goes dead. It seems version or content (?) dependent. The first movie uses all content and player from http://www.jeroenwijering.com. This player is from http://www.jeroenwijering.com/embed/player.swf (4.2.90) This player is from http://www.jeroenwijering.com download page (4.2.95) located on my webserver. Note the misformed image. You must click twice on the play button. This player is from http://www.jeroenwijering.com/embed/player.swf (4.2.90)