Blank Screen or 500 Error on MODX Resources After Upgrade to 2.5+

Symptom

You've recently upgraded to MODX Revolution 2.5 or above from a version below 2.5 and now get a blank page or 500 error when you try to edit a resource. 

Resolution

If it's only Resources you cannot edit but you can edit/access other parts of the MODX Manager, it's most likely that you need to upgrade TinyMCE

Older versions of TinyMCE contain a bug that was brought to light with changes in MODX Revolution 2.5 and therefore should be updated. You can update TinyMCE by clicking Extras>Installer and locating TinyMCE in the list of installed Extras in your site. You should see a highlighted Update button. 


It's good practice to always check for Extras updates after you upgrade MODX.

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