我的matlab为什么启动不了？

tigeroar

root@0[/]# /usr/local/matlab/etc/lmstart -c /usr/local/matlab/etc/license.dat

    Error: License file, $LM_FILE, has no SERVER lines.

           LM_FILE = /usr/local/matlab/etc/license.dat

           If all features are locked to a hostid of DEMO then
           running license manager daemons is not required.
           Otherwise, fix $LM_FILE by adding SERVER and DAEMON
           line(s) and try again.
会出上面的错误，那个license.dat是我从网上下载的，他们说没问题，但我启动不了，请大侠帮忙，怎么才能启动，怎么作，谢谢了先。