[help] l!cense daemon problem under linux

I have installed several softwares under linux OS. And I merged all lic files into one file. Then I start lmgrd:
lmgrd -c <lic_file> -l <logfile>
where <lic_file> is my new lic file.

But when I check the log file, I got the following message:
...
Trying connection to <host>
license daemon: lost all connections
This is an internal error. lmgrd will now attempt to re-establish contact with other daemons.
Trying connection to <host>
license daemon: lost all connections
This is an internal error.
...
(repeat)

where <host> is the hostname of my computer.
If I run a program, the output log file give me the following message:
the server (lmgrd) has not been started

I wonder what's the matter with this, and how to solve this problem?
Thanks.

you can split the different ventor's lic into different lic file