SARG suddenly can't process

I am running SQUID2.5 on RH9 which works great. I have had SARG 1.4.1
running great for 3 months, and then it stopped producing reports. If
I run my daily report manually, I get the following:

[root@CHOMSKY root]# /etc/cron.daily/sarg
/usr/bin/sarg: (log) Cannot open temporary file:
/tmp/sarg/dcollins..travelocity.com/html.ng/site=travelocity&cobrand=TRAVELOCITY&adsize=125x12 5&area=air&orig=CHS&dest=BHM&random=873372.unsor t

I am using the following daily script:

#!/bin/bash
exec /usr/bin/sarg \
-o /usr/local/apache2/htdocs/squid-reports/daily \
-d "$(date --date "1 day ago" +%d/%m/%Y)"

Every day I run it, it stops on a different line because the script
only processes the previous days' lines, so I think it is a character
set issue. Here is the output from the locale command:

[root@CHOMSKY root]# locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=

The partitions have plenty of space:

[root@CHOMSKY root]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdb1 34G 3.0G 29G 10% /
/dev/sda1 99M 9.3M 85M 10% /boot
none 504M 0 504M 0% /dev/shm
/dev/sda2 34G 610M 31G 2% /var

The access.log is currently 89MB. Any ideas?

Thanks in advance...Greg