As the title says, when you try to mail something ingame the game crashes 
  
Version: EP30_Global,BLS,V2110409,110 
BuildDate: Mon Jul 17 12:30:55 2017 
  
Time: 2019.10.21 22:09:50 [GTick=91897,LGTicks=84455] 
PosCode: 82925:149303:-3468 
ZoneName: Town of Giran 
OS: Windows 10(64) 10.0 (Build: 9200), Service Pack 0.0 
CPU: GenuineIntel  Intel® Core i7-4790 CPU @ 3.60GHz @ 3596 MHz 
RAM: 16341MB RAM 
CPUInfo: 8,4,8,1 
Memory: 1191674KB 
Video: NVIDIA GeForce GTX 1060 6GB (1917), DX v4.9r904 
Option: 1920x1200S_W2_H0A0K_ 
VideoResources: 355 MB 
MAC: F4-F2-6D-05-34-C0 
LANG: ENGLISH 
IME: ??? 
  
Error: The system file may have been damaged. After ending the game, please check the file using the Lineage II auto update. 
  
History: FMallocWindows::Malloc <+ 00000000 881838280 FArray mem=1220274314, aligned=1223352320 <- FMallocWindows::Realloc <+ A8690000 881838280 FArray <- FArray::Realloc <+ 26905*32776 <- ExShowPetitionHtml <- UNetworkHandler::Tick <+ Function Name=ExShowPetitionH <- UGameEngine::Tick <- UpdateWorld <- CMainLoop::UpdateTheWorld <- MainLoop