Call to a member function get() on array

[brescianicri]

I install this modules with packge manager and i recive this error:
PHP Fatal error: Uncaught Error: Call to a member function get() on array in /xxxxx/modxtest.dev/core/cache/includes/elements/modplugin/12.include.cache.php:40

[Mark-H]

Are you sure this isn't an issue caused by TinyMCE being installed? Make sure that's up to date.

[fireproofsocks]

What Snippet has id 12 in your install?