2012-02-17 12:02:04 [SEVERE] Query: INSERT INTO sc_kills ( attacker, attacker_tag, victim, victim_tag, kill_type) VALUES ( 'michaeljustarock','zyt','jimbob9876','dfd','n');
2012-02-17 12:02:04 [SEVERE] Error at SQL INSERT Query: java.sql.SQLException: [SQLITE_ERROR] SQL error or missing database (table sc_kills has no column named attacker_tag)

I was getting such errors for a long time and decided to open this ticket now that it got worse...
What's the problem here?
Thanks in advance.

Delete your sc_kills table and restart your server.

uhm... how ?
When I open the SimpleClans.db all I see is:

SQLite format 3‚�
�ã

open the .db file wiht SQLiteManager. Then delete the sc_kills table.

Thanks!