Mrtg Error

I've been having some trouble with mrtg and can't quite figure out what's going on:

[root@spike ~]# service mrtg restart
Shutting down MRTG: [FAILED]
Starting MRTG: Daemonizing MRTG ...

[root@spike ~]# WARNING: Problem with External get '/etc/mrtg/system network eth1':
Expected a Number for 'in' but got ''

WARNING: Problem with Externale get '/etc/mrtg/system network eth1':
Expected a Number for 'out' but got ''

Rateup WARNING: /usr/bin/rateup could not read the primary log file for index
Rateup ERROR: /usr/bin/rateup found index's log file was corrupt
or not in sorted order:
time: 1143158400.Rateup WARNING: /usr/bin/rateup The backup log file for index was invalid as well
ERROR: Skipping webupdates because rateup did not return anything sensible
WARNING: rateup died from Signal 0
with Exit Value 1 when doing router 'index'
Signal was 0, Returncode was 1
ERROR: Target[index1][_IN_] ' $target->[1]{$mode} ' did not eval into defined data
ERROR: Target[index1][_OUT_] ' $target->[1]{$mode} ' did not eval into defined data
Rateup WARNING: /usr/bin/rateup could not read the primary log file for tcp
Rateup ERROR: /usr/bin/rateup found tcp's log file was corrupt
or not in sorted order:
time: 1183366800.Rateup WARNING: /usr/bin/rateup The backup log file for tcp was invalid as well
ERROR: Skipping webupdates because rateup did not return anything sensible
WARNING: rateup died from Signal 0
with Exit Value 1 when doing router 'tcp'
Signal was 0, Returncode was 1
Rateup WARNING: /usr/bin/rateup could not read the primary log file for processes
Rateup ERROR: /usr/bin/rateup found processes's log file was corrupt
or not in sorted order:
time: 1182693600.Rateup WARNING: /usr/bin/rateup The backup log file for processes was invalid as well
ERROR: Skipping webupdates because rateup did not return anything sensible
WARNING: rateup died from Signal 0
with Exit Value 1 when doing router 'processes'
Signal was 0, Returncode was 1
Rateup WARNING: /usr/bin/rateup could not read the primary log file for mail-host-email-totals
Rateup ERROR: /usr/bin/rateup found mail-host-email-totals's log file was corrupt
or not in sorted order:
time: 1115251200.Rateup WARNING: /usr/bin/rateup The backup log file for mail-host-email-totals was invalid as well
ERROR: Skipping webupdates because rateup did not return anything sensible
WARNING: rateup died from Signal 0
with Exit Value 1 when doing router 'mail-host-email-totals'
Signal was 0, Returncode was 1
Rateup WARNING: /usr/bin/rateup could not read the primary log file for mail-host-email-queue
Rateup ERROR: /usr/bin/rateup found mail-host-email-queue's log file was corrupt
or not in sorted order:
time: 1185176100.Rateup WARNING: /usr/bin/rateup The backup log file for mail-host-email-queue was invalid as well
ERROR: Skipping webupdates because rateup did not return anything sensible
WARNING: rateup died from Signal 0
with Exit Value 1 when doing router 'mail-host-email-queue'
Signal was 0, Returncode was 1
Rateup WARNING: /usr/bin/rateup could not read the primary log file for mail-host-email-count
Rateup ERROR: /usr/bin/rateup found mail-host-email-count's log file was corrupt
or not in sorted order:
time: 1158796800.Rateup WARNING: /usr/bin/rateup The backup log file for mail-host-email-count was invalid as well
ERROR: Skipping webupdates because rateup did not return anything sensible
WARNING: rateup died from Signal 0
with Exit Value 1 when doing router 'mail-host-email-count'
Signal was 0, Returncode was 1

/etc/mrtg/system network eth0
/etc/mrtg/system network eth1