You're definitely going to have to provide more information. You have not stated what client version or language you are using yet. Also, if possible, check what the window's class name is.
OK i´m using the client version 2.1.3.1984 and the language is german. But I don´t know what you mean, when you´re talking about the window´s class name. Also I changed the ´RunesofMagic´ into ´*´ . That´s what you discribed in the other thread.
Try switching the client language to English (which can be done through the launcher) and see if that fixes the problem. Also, what is the window title for RoM (for both the German and English languages)? Do you run the game windowed or full screen? Attach a copy of your log.txt.
Mon Jan 04 19:29:09 2010 : MicroMacro v1.0
Mon Jan 04 19:29:09 2010 : Processor Type: 2X 586, OS: Windows XP Service Pack 2
Mon Jan 04 19:29:09 2010 : LuaCoco is available.
Mon Jan 04 19:29:09 2010 : Lua glues exported.
Mon Jan 04 19:29:09 2010 : Keyboard layout: US English
Mon Jan 04 19:29:17 2010 : Executing script 'createpath.lua'
==================================================
Mon Jan 04 19:29:17 2010 : Language: english
Mon Jan 04 19:29:17 2010 : findWindowList() returned 0 results. Window(s) not found or other error occured.
Mon Jan 04 19:29:17 2010 : Error attempting to open process 0xA44C60. Error code: 87 (The parameter is incorrect.).
Mon Jan 04 19:29:17 2010 : scripts\rom\createpath.lua:79: bad argument #1 to 'memoryReadIntPtr' ((null))
Mon Jan 04 19:29:17 2010 : Execution error: Runtime error
It could be many things. Are you absolutely sure you downloaded MicroMacro from the download page recently (ie. within the last month)? If you got the package off some other site, it's probably outdated and, possibly, broken. So, I would start there.
You can also try downloading Winspector to grab the window's Class Name for the Runes of Magic window (should be "Radiant Arcana").