Menu customization not working

[rxrbxr]

Hi!
We are again experiencing issues related to the customization of our website’s main menu. More precisely, when trying to access it through the Dashboard - Appearance - Menu option, we get an error message saying:
Fatal error: Unknown: Cannot use output buffering in output buffering display handlers in Unknown on line

Since we have recently had problems with getting to this option and deactivating the plugins helped (we deactivated one at a time til we found the guilty one), we tried this again now. This time it seems that the Cornerstone plugin is causing the issue. The moment we deactivate it, we can get to the Menu in the Dashboard, add or remove pages and save successfully. When we reactivate the plugin, the fatal error is thrown again.

Could you, please, look into this and advise accordingly?

Thank you in advance!

[Prasant]

Hello Jamie,

Thanks for writing in!

I see that you are using cache plugin and have activated minification. Can you please clear cache and also disable minification and see if you are getting same error message or not?

In case problem is still there, please share website login details in secure note for us to take a closer look.

Thanks.

[rxrbxr]

@Prasant

minification

Hi Prasant!
Thank you for the suggestion. I cleared the cache and the menu seems to be working again for the moment.

[jade]

Glad to hear it’s working again, Jamie.