I just installed 1.4.1 on a German Vista build 5744, and when after opening UE I try to select an archive/installer file, an AutoIt Error window tells me that: Line 0 (File "C:\Program Files\Universal Extractor\UniExtract.exe"): GUICtrlSetState($ok, $GUI_FOCUS) GUICtrlSetState(^ERROR Error: Variable used without being declared.