Crash log contents. building armour in Mistlock Sanctuary

Apr 21 12:27:33 arcdps 20190408.190656-292-x64
Apr 21 12:27:34 client: gw2 0x7FF6E9020000-0x7FF6EB530000 (0x6EFA4112)
Apr 21 12:27:34 client: arcdps 0x7FFA09350000-0x7FFA093FC000 (0x2196E92B)
Apr 21 12:27:34 client: d3d9 0x7FF9E37E0000-0x7FF9E397E000 (0xCA2E9D5F)
Apr 21 12:27:35 extensions: buildtemplates 0x7FFA1F6A0000-0x7FFA1F6B3000 (20190305.201717-289-x64, 0x7621E183)
Apr 21 12:27:35 config: loading from "I:\Guild Wars 2\addons\arcdps\arcdps.ini"
Apr 21 12:49:33 error: intercepted crash from client assertion fail, terminating
Apr 21 12:49:33 error: assertion: "..\..\..\Engine\Gr\Dx9\Dx9Buffer.cpp", "vbAlloc->guardValue == BUFFER_GUARD_VALUE", 1504