Hello, suppose having a custom DLL (actualy a Lua module) in: d:\Lukas\Lua\54\WinCon.dll How exactly should I alter the path specification so LMTX be able to load WinCon.dll? My trials - without success so far - are: 1. Alter LUA_CPATH before running Ctx, so something like: ---- (command line) set LUA_CPATH=d:\Lukas\Lua\54\?.dll;%LUA_CPATH% context.exe test.tex ... ---- 2. Alter LUAINPUTS before running Ctx, so something like: ---- (command line) set LUAINPUTS=%LUAINPUTS%;d:\Lukas\Lua\54\?.dll;%LUA_CPATH% context.exe test.tex ... ---- 3. Changing the path at runtime, so something like: ---- test.tex \startluacode package.cpath = package.cpath .. ";d:/Lukas/Lua/54/?.dll" require "MyLib" \stopluacode ---- But I'm still getting errors like: " ... token call, execute: ...TX/tex/texmf-context/tex/context/base/mkiv/l-sandbox.lua:180: module 'WinCon' not found: no field package.preload['WinCon'] no file 'd:\Lukas\Lua\WinCon.lua' no file 'd:\Lukas\Common\Statics\WinCon.lua' no file 'd:\Lukas\Lua\3rdParty\WinCon.lua' no file 'd:\Lukas\Lua\3rdParty\stdlib\modules\WinCon.lua' no file 'd:\Lukas\Lua\3rdParty\LuaXML\WinCon.lua' no file 'C:\Program Files (x86)\Lua\5.1\lua\WinCon.luac' no file 'd:\Lukas\Lua\Geom' ... " Surprisingly, loader tries to locate a *.lua* only, whilst here I nedd to load a .dll; and in genereal case, .lua, .luac and .dll may be required. So - how to specify the path correctly, be it on the command line or within a .tex (LMTX run-time)? Best regards, Lukas