Removing finish page causes errors

I am trying to replace my finish page with a custom page and to start the process I am first trying to prevent the stock finish page from showing....

ShowInstDetails show

         !insertmacro MUI_LANGUAGE English

         !insertmacro MUI_PAGE_WELCOME

         !insertmacro MUI_PAGE_LICENSE "licence.txt"

         !insertmacro MUI_PAGE_DIRECTORY

         !insertmacro MUI_PAGE_INSTFILES

         

         ;;;;;;;FINISH PAGE SECTION;;;;;;;;;;;;;;;;;

         !insertmacro MUI_PAGE_FINISH



         ;;;;;;;;;;UNINSTALL SECTION;;;;;;;;;;;;;;;;

         ShowUninstDetails show

         !insertmacro MUI_UNPAGE_WELCOME

         !insertmacro MUI_UNPAGE_CONFIRM

         !insertmacro MUI_UNPAGE_INSTFILES

This works fine but if I remove the !insertmacro MUI_PAGE_FINISH to stop showing the finish page then it gives the error below.....

!insertmacro: MUI_UNPAGE_WELCOME - Call must be used with function names starting with "un." in the uninstall section.

Any ideas what is going wrong?

You probably have a left over MUI page callback define for CREATE/SHOW/LEAVE