mplayer dont working with xfce

[Guilherme Albuquerque Zalochi]

Hi all


Why my mplayer dont working in xfce?

i recive this error 
X11 error: BadAccess (attempt to access private resource denied)


MPlayer interrupted by signal 6 in module: decode_video
- MPlayer crashed. This shouldn't happen.
  It can be a bug in the MPlayer code _or_ in your drivers _or_ in your gcc
  version. If you think it's MPlayer's fault, please read DOCS/bugreports.html
  and follow the instructions there. We can't and won't help unless you provide
  this information when reporting a possible bug.


in another windowmanager mplayer works is fine




tks