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Front-End Editor breaks when more than two plugins are activated

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Hey guys,


I'm having a problem which I've never encountered with DMS before. When more than 2-3 plugins are active the Front-End Editor and all CSS breaks. However, the CSS problems are only apparent when logged in.


There are no error messages in the developer console, PL Debug Info or when using WP_DEBUG.


PL Debug Info:


WordPress Version


WordPress Debug


Multisite Enabled


Current Role


Framework Path


Framework URI


Framework Version

PHP Version




WP memory limit

120 MB

WP MAX memory limit

256 MB

PHP memory limit

256 MB

Mysql version


WP Max Upload Size

8 MB


8 MB

PHP Max Execution Time


PHP type


WebServer software


PHP User




Installed Plugins







As soon as the Ubermenu plugin is activated the Front-End Editor breaks. After deactivation and a page refresh everything works normally again.. My first suspicion was some kind of php memory error but raising the memory limit had no effect and Wordpress wasn't throwing an OUT OF MEMORY error anyway.


I've also tried reinstalling Wordpress and DMS, resetting all FTP permissions etc. but still don't have any clue what's going on here.


Any ideas? I've attached a screenshot showing what the page looks like when broken.







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UberMenu shouldn't be giving you any issues as it is compatible with DMS when used with the UberMenu section via our shop. So the likely issue is either a server configuration issue or you have other plugins active that are causing the error.


When you encounter the issue, are there any errors in Chrome dev tools ?

Please search our forums, before posting!

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there are no errors in the dev console. 


I think I've found the issue causing the problem though:


The "?pagedraft=1" CSS file responds with a normal 200 success Status in the dev tools network tab, but the actual content of the file is:


<br />
<b>Fatal error</b>: Out of memory (allocated 35389440) (tried to allocate 571989 bytes) in <b>/homepages/24/d145919232/htdocs/wordpress/wp-includes/wp-db.php</b> on line <b>1038</b><br />


I still don't know why this is happening though. Wordpress isn't even close to using its PHP limit of 120M.


According to a Dashboard Memory Plugin: WP 120M (def) Usage 7% 17.28M of PHP Limit 256M)


Any ideas how to fix this?




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Well according to the bytes allocated in your error, your server only has 33.75Mb, and it tried to allocate a further 0.54Mb. This displays that your server doesn't have the 120Mb you seem to think you have. It is highly likely that your host has installed a script that allows them to say it has one thing, when indeed it has a completely different value. I recommend you speak to your host as this isn't something we can resolved, the issue is server side.

Please search our forums, before posting!

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