Due to people potentially corrupting AniDB by abusing their ability to open the db format in AOM the db file format will change in the next version of AOM, I'm sorry to have to do this but any risk to AniDB is completelly unacceptable.
There will also be several checks added to prevent users from modifying certain information in the db file if they feel like reverse engineering.
I know this might cause hassle for some people who feel it's useful to be able to run queries on the AniDB database but the ability was never meant to be there, if you're smart you can fetch the information anyway, nothing to do about that but AOM will at least try it's best to prevent you from submitting invalid information to AniDB.