Ole error code 0x80040154 class not registered

I m using Win7 Ultimate 32-Bit, i installed Cleantouch Dictionary V. 5 but when i try to run that error show (OLE error code 0x80040154. Mar 24, 2000 &#183&nbsp When you start the Class Browser, one or more of the following errors appears: Clicking OK and selecting a class library from the Open dialog box causes. […]