duplicate menus and items

Hi,

When I work on the project, the menus are duplicate (triplicate !). in the same time, items (Add, Delete, Export...) are also duplicate.
This problem appear only on the very first page I made, others still OK, even i work on them.
I try 2 ways:

1 - Reset the page..... It works but.... I loose any snippet I made.... Not very cool ! <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=17265&image=1&table=forumtopics' class='bbc_emoticon' alt=':angry:' />

2 - Delete manually, on the form or on the code the duplicate entries... Works fine, but not very cool too ! <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=17265&image=2&table=forumtopics' class='bbc_emoticon' alt=':(' />
Is there an update or somthing else to do ?