MRTG Errors : Please Help!!!

if anybody could help me on this error:

I have configured mrtg and it successfully create graphs of the device i've monitored. But, after 6 days, i 've got an error msg:

ERROR: Target[10.1.3.162_174][_OUT_] ' $target->[127]{$mode} ' did not eval int defined data

Then, i run the MRTG compilation again, and found these prompt:

The error are because: ERROR: I Quit! Another copy of mrtg seems to be running. Check /home/mrtg/cfg/mrtg.pid
You have new mail in /var/spool/mail/root

I've checked the data in /home/mrtg/cfg/mrtg.pid = the contents of the file is only '2901'.

I open the /var/spool/mail/root = it does show these:
--------------------- ModProbe Begin ------------------------

Can't locate these modules:
sound-service-1-0: 2 Time(s)
char-major-226: 1 Time(s)
sound-slot-1: 2 Time(s)
char-major-188: 1 Time(s)

What I have to do to solve this problems? Please anybody help me???

 

 

 

 

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