First of all, please read this: >7z UDF WIP : Can 7z.dll be used in AutoIt? I'd like to start a new topic because dany seems to have given up the idea and has been off-line for about eight months. I've tried 7z.au3 and found a few bugs. GUID verification fails due to the bad regex GUIDs defined in the UDF are wrong. For example, $7Z_INTERFACE_IN_ARCHIVE should be { 23170F69-40C1-278A-0000-000600 600000} After correcting them, I succeeded in calling CreateObject. However, I can't find