what means ?
"MoveItemWorldPosition: item 0x7957cb9e at old-x/y(45,65 - britannia) new-x/y(1512,1764 - britannia) does not exist in world zone."

=== CUT ===
Build: POL097-2008-09-01 Coregina (gentoo)
Last Script: pkg/sistemas/boat/boat.ecl PC: 240
Stack Backtrace:
[0x8222270]
[0x110400]
[0x82aad43]
[0x81a5dc0]
[0x81559ab]
[0x805d28d]
[0x805d511]
[0x80611a5]
[0x81ed67e]
[0x81f11a6]
[0x81ef274]
[0x812f842]
[0x812fd29]
[0x80f6314]
[0x8226b69]
[0x8226e4b]
[0x826e37a]
[0x82b7ace]
=== CUT ===

PC 240: MoveBoatRelative( boat, relative_direction );

[]'s

That means, Item with that Serial, was trying to be moved from the location given (upper right corner of map), to the new location (to the waterfront area at britain docks), but the item was not listed as being a part of that realm. In other words, the item was not set as being Inside the britannia realm, but either in another realm or had no realm property set to it at all for some odd reason.

When something like that happens, it is best to IMMEDIATELY get that item's storage information and post it with the bug report (from items.txt or storage.txt, wherever that serial for that item exists, post them and say which file it came from).

Will try to see about expanding that message to help more (maybe say the realm it does exist in, or if it is not loaded to any realm? who knows)

Unfortunality item 0x7957cb9e do not exist more
thanks for help MuadDib, next time ill try give necessary information about issue.