Was wondering if anyone knows if or when a 2.4 compatible database will be available for download soon.

the old database is compatible already. I didn't download a new db yet but still all the old info is in. Just enable 'Load out of date'.

Hmm.. Not working for me. I just want to see where the possible mining/herb spawn locations are on the map and mini map. Any ideas?

http://files.wowace.com has the current db.

I'm having this same issue. I downloaded the Cartographer from wowace, but none of them show show up on my map or mini map. When I do find one that does however, it won't let me filter what shows up. @_@

Horra, try blowing away all your cartographer files (only from addons, not from wtf) and then redownloading them from the wowace site. Sometimes ACE mods go through some fairly solid rewrites that require a total blow away, redownload.