WP - Errors after update from 4.6 LTS to 4.7

Question

Upgrading seems to work fine, I checked folders and resources configuration because the paths weren't there anymore. Then when I try to access the extensions menu I get the following error :

Cannot read unrecognized property CRM_Core_Config::$defaultSymbol.

And the extensions list isn't being displayed. I tried turning debugging on but nothing shows

Answer 1

This is highly due to one of the custom extension enabled on your site. Few steps you could try to fix this -

• Check if any of the extension overrides the file CRM/Core/Config.php. If you find it, move it outside the site dir and disable that extension after reloading the page.
• Manually disable the extension from the database one by one and try to reload the page. To disable the ext, set is_active value to 0 in civicrm_extension table. (Remember to revert it back if the page reload is still an error).
• Check if the custom php directory overrides the core file CRM/Core/Config.php. If yes, do the same as step 1.