Change your logfile permissions to allow write for your web server
or change PurgeLofFile=1 into PurgeLogFile=0 in configure file
(and think to purge sometines your logile. Launch AWStats just before this to save in AWStats history text files all informations logfile contains).
Error: History file "/var/www/statclient/www-jaylou-ava-com062010.txt" is corrupted (in section UNKNOWNIP). Last line read is number 4510.
Correct the line, restore a recent backup of this file, or remove it (data for this month will be lost).