I've been trying to solve this problem with no luck yet.
I have a large SS site, working wonderfully until recently. When opening some (not all) of the folders in the Security tab, I get a "Error Loading Subtree" message and the folder does not expand. If I click out of the Security tab, then back in, the tab will be expanded.
I've seen several similar posts on here from the past year with little or no solutions.
There are 60+ groups in the Security tab with a couple hundred users. Some folders will open, some won't. The problem is across all browsers. This "MAY" have started when we upgraded to the latest release of SS a couple months ago, but it was only brought to my attention a couple weeks ago, so I can't be sure.
We are not running multiple languages, but we are running many modules and extensions. I updated all that seemed necessary at the same time - not sure if it's a module causing the conflict. (userforms, event calendar, data object manager, spam protection, etc)
Firebug sees the problem, I haven't edited any core code yet, and would love a little direction before I start to!
Thanks.
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Firebug shows:
"error loading subtree",
"500//ERROR [User Error]: Uncaught Exception: Object->__call(): the method 'cmstreeclasses' does not exist on 'Group'
IN POST /admin/security/getsubtree?ajax=1&ID=109
Line 551 in /home/XXXX/public_html/sapphire/core/Object.php
Source
542: case isset($config['function']) :
543: return $config['function']($this, $arguments);
544:
545: default :
546: throw new Exception (
547: "Object->__call(): extra method $method is invalid on $this->class:" . var_export($config,\n true)
548: );
549: }
550: } else {
551: throw new Exception("Object->__call(): the method '$method' does not exist on '$this->class'");
552: }
553: }
