I seem to recall having this problem when I first ran 1.1.6.  The postauth_query is:

        postauth_query = "INSERT into ${postauth_table} (id, user, pass, reply, date) values ('', '%{User-Name}', '%{User-Password:-Chap-Password}', '%{reply:Packet-Type}', NOW())"

… but MySQL barfs about an invalid ‘id’ value.  Maybe this is down to my schema … but surely, being an auto increment, we just don’t need to specify the ‘id’ in the INSERT?

I’ve modified it at my end to just be …

        postauth_query = "INSERT into ${postauth_table} (user, pass, reply, date) values ('%{User-Name}', '%{User-Password:-Chap-Password}', '%{reply:Packet-Type}', NOW())"

… which works fine.

   -- hugh