i get this after the new maitnance

2012.4.11 20:16:37
l2build110830
OS : Windows XP 5.1 (Build: 2600)
CPU : GenuineIntel Intel® Core™2 Duo CPU E8400 @ 3.00GHz @ 3003 MHz 3070MB RAM
Video : No Video
PosCode : LS1(410) 0:0:0 2/0 [311]

Assertion failed: IsValid() [File:.\UnObj.cpp] [Line: 527]

History: UObject::~UObject <- L2FNameSerialize <- FL2WeaponItemData::Serialize <- FL2WeaponItemDataManager::Serialize <- FL2GameData::LoadL2DataBin <- FL2GameData::WeaponItemDataLoad <- FL2GameData::Load <- UGameEngine::Init <- InitEngine

updated /copied .dll/l2.exe run over l2tower and this pops up

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got it fixed

deleted l2.exe updated, renamed l2.exe to l2.bin
and thats all, no patching no deleting GG.des/folder and it works like a charm