I've just installed Test maker 6 and following tutorial instruction to go Tools then Designer ... I am getting the message

Error:Couldn't find required file: c:\Documents and Settings\All Users\Application Data\Titanium\runtime\win32\1.1.0\khost.dll

* already installed the Windows XP fix


I have been successful in this and now I am able to work on PushToTest TestMaker.
Actually after installation of testmaker, when we try to run Designer or Editor, it starts downloading few components and installing those. It gets installed in "C:\Documents and Settings\All Users\Application Data\Titanium\runtime\win32\1.1.0" folder.
Titanium folder gets created when these components are installed. If your organization poses some restrictions to access Internet, you may not be able to get all the dll and other components installed properly. Only folder would get created. So try getting it installed on machine which has full access to Internet.

Hope this helps to resolve your issue.