[Error]: Attempting to save all online characters!

Originally posted by [b]snoppy[/b]
http://www.eathena.ws/board/index.php?autocom=bugtracker&showbug=3435

Hello, my server shows the following error:

[Status]: set users "NAME" : 38
[Info]: Saved char 151193 - Fenrir: inventory status.
[Info]: Saved char 151196 - Alt F4 Te Da Heal: inventory storage.
[Info]: Saved guild (42 - Phantom Hood): members
[Error]: Server received crash signal! Attempting to save all online characters!
[Info]: Saved char 150692 - xXsantoXx: inventory.
[Info]: Saved char 151203 - El Tanke: status skills.
[Info]: Saved char 150763 - Stais: inventory status.
[Info]: Saved char 150820 - T r a s h e R: inventory.
[Info]: Saved char 150787 - Kyhara: inventory status.
[Info]: Saved char 151127 - Kelts Sin: inventory.
[Info]: Saved char 151148 - Chein xD: inventory.
[Info]: Saved char 150061 - I Wolverine I: skills.
[Info]: Saved char 151057 - PashonShito: inventory status.
[Info]: Saved char 151202 - Kirk H: inventory status skills.
[Info]: Saved char 151204 - Biscuit x3: status skills.
[Info]: Saved char 151200 - Belzebu: status.
[Info]: Saved char 150616 - RaY3nG: inventory.
[Info]: Saved char 151189 - NiicoBooM: inventory.
[Info]: Saved char 151191 - Makax: inventory status status2 skills.
[Info]: Saved char 151194 - Mc Bride: inventory status status2 skills.
[Info]: Saved char 151198 - K i l l e r: inventory status.
[Info]: Saved char 150838 - Shaka Hw: inventory status.
[Info]: Saved char 150385 - TATSUKI: inventory.
[Info]: Pet saved 100 - Succubus.
[Info]: Saved char 150864 - HEIHASHI LK: inventory status.
[Info]: Saved char 151199 - Ammm: inventory status.
[Info]: Saved char 151038 - Danger: inventory status hotkeys.
[Info]: Saved char 150678 - x Lehn: inventory status.
[Info]: Saved char 150789 - Carrier: inventory status.
[Info]: Saved char 150596 - Namine Gainsborugh: inventory.
[Info]: Saved char 151201 - Acid Star: inventory status skills.
[Info]: Saved char 150630 - Fallen Souls: inventory status status2 skills.
[Info]: Saved char 151197 - DarkMerchant: status skills.
[Status]: Map-server 0 (session #7) has disconnected.
[Status]: set users "NAME" : 0

The error occurs at noon and at night. I've only changed mmo.h => max_chars 18 and mob.h max_mob_db 10000 in src.
I tried using an older version but the error persists.

Sorry for my bad English, I'm spanish.