C5.6 to C5.8 Editable areas blank

I have uploaded by old concrete5.6.x.x to concrete5.8.x.x
However when I put the site into edit mode, the editable areas have disappeared. Is there a code change between versions for editable areas? How can I solve this?
thanks

You will have to explain that statement given that there is no upgrade path from 5.6 to 5.8 ?

Good point!
I have done a fresh install of Concete5.8.x.x and then copied the theme files (default.php, header.php, footer.php etc…) into the applications/thmes folder. But the editable areas either dont show or do show but or not editable (nothing happens when I mouse over).

Without visibility of your theme files, it’s difficult to comment, but you might want to check whether there is any javascript code in your theme files that is no longer compatible, or missing entirely. Check the debug console in your browser for any errors.

It’s also the case that all of your theme’s css should be scoped within the “ccm-page” class, which should be a div wrapped around everything inside the body. e.g.:

<head>
<?php View::element('header_required') ?>
.............other header stuff
</head>
<body>
<div class="<?php echo $c->getPageWrapperClass() ?>">
......all your theme content
</div><!-- c5 wrapper class-->
<?php
View::element('footer_required') ?>
</body>
</html>

Doing that means that your theme’s css should not interfere with the editor’s css. You will likely need to edit your theme’s CSS to prefix every rule with .ccm-page

SOLVED. Turns out something was janky (technical term!) in my header.php code