6.1 build 1551 menu building error

Hi,
Build 1551 throws up an error when building an edited menu. If the menu is reset the build works.
The error says: "C:\ProgramFiles\AspRunnerPro6.1\Templates\Layouts\Paris\menuitem_horiz.htm(1) - include: error opening C:\ProgramFiles\AspRunnerPro6.1\source\menuitem.htm file"
The menu was fine on 1496 - can I redownload this <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=11467&image=1&table=forumtopics' class='bbc_emoticon' alt=':)' />
Regards
Pete