LinuxQuestions.org - Slackbuild MPlayer trouble installing

Every time i try to compile the ./MPlayer.Slackbuild script, it will run for a while and then stop right when it looks like it's about to finish and not really leaving me an error message. Here is the final script that it gives me:

Code:

*** Download skin(s) at http://www.mplayerhq.hu/dload.html

*** for GUI, and extract to /tmp/SBo/package-MPlayer/usr/share/mplayer/skins/

install -m 644 etc/mplayer.xpm /tmp/SBo/package-MPlayer/usr/share/pixmaps/mplayer.xpm

install -m 644 etc/mplayer.desktop /tmp/SBo/package-MPlayer/usr/share/applications/mplayer.desktop

./MPlayer.SlackBuild: 86: pushd: not found

./MPlayer.SlackBuild: 89: popd: not found

./MPlayer.SlackBuild: 92: pushd: not found

./MPlayer.SlackBuild: 96: popd: not found

./MPlayer.SlackBuild: 98: pushd: not found

rm: cannot remove `font': No such file or directory

./MPlayer.SlackBuild: 102: popd: not found

cp: cannot stat `AUTHORS': No such file or directory

cp: cannot stat `ChangeLog': No such file or directory

cp: cannot stat `Copyright': No such file or directory

cp: cannot stat `LICENSE': No such file or directory

cp: cannot stat `README': No such file or directory

cat: etc/example.conf: No such file or directory

./MPlayer.SlackBuild: 121: /sbin/makepkg: not found