Error zoneminder

[julian]

Good afternoon, I have installed zabbix it comes to warning and alerting the zoneminder, something is wrong, and I can not solve.
I have 4 cameras connected to video card

logs :

cam bin # tail -f /var/log/zm/zmdc.log
07/26/12 15:49:44.667098 zmdc[2730].ERR ['zma -m 16' exited abnormally, exit status 255]
07/26/12 15:49:47.573810 zmdc[2730].INF ['zma -m 19' starting at 12/07/26 15:49:47, pid = 6636]
07/26/12 15:49:57.812092 zmdc[2730].INF ['zma -m 16' starting at 12/07/26 15:49:57, pid = 6638]
07/26/12 15:50:09.517869 zmdc[2730].ERR ['zma -m 18' exited abnormally, exit status 255]
07/26/12 15:50:10.721036 zmdc[2730].ERR ['zma -m 17' exited abnormally, exit status 255]
07/26/12 15:50:18.053047 zmdc[2730].INF ['zma -m 17' starting at 12/07/26 15:50:18, pid = 6667]
07/26/12 15:50:18.306690 zmdc[2730].INF ['zma -m 18' starting at 12/07/26 15:50:18, pid = 6669]
07/26/12 15:50:21.264635 zmdc[2730].ERR ['zma -m 19' exited abnormally, exit status 255]
07/26/12 15:50:28.545965 zmdc[2730].INF ['zma -m 19' starting at 12/07/26 15:50:28, pid = 6671]
07/26/12 15:50:31.501211 zmdc[2730].ERR ['zma -m 16' exited abnormally, exit status 255]

are these errors, someone knows how to solve please?