HELP. SAVING DATA ERROR

[Woodbury]

Guy's we've been troubleshooting this error for a long time but it keeps showing up.

Once the game mode requests for a server backup or an item respawn and falls due to lag, seems like the server isn't able to save all the data, When it restarts itself, players lose their vehicles and tents, and our server console shoots this:

[2013-07-12 20:01:48] WARNING: Bad argument @ 'setElementData' [Expected element at argument 1] ?

[2013-07-12 20:01:48] WARNING: Bad argument @ 'setElementData' [Expected element at argument 1] ?

[2013-07-12 20:01:48] WARNING: Bad argument @ 'setElementData' [Expected element at argument 1] ?

[2013-07-12 20:01:48] WARNING: Bad argument @ 'setElementData' [Expected element at argument 1] ?

[2013-07-12 20:01:48] WARNING: Bad argument @ 'setElementData' [Expected element at argument 1] ?

It's shown more than twenty times a second.

We tried restoring the database, and ''stopping the gamemode first'' seems to work, but we can't be stopping the gamemode every time the server is going to do an item respawn or a backup.

We would really appreciate your help since we're trully frustrated.

Thanks a lot.

PD: We're running DayZ Mod 0.6 nightly version on a Linux server. MTA version is 1.3.3

[Woodbury]

Also vehicles don't spawn at the moment of launching the server. Most of the helicopter spawns are empty, and even using /svp they don't appear.