Broken JS/Theme registry with Memcache

I'm able to reliable reproduce only in a particular set of hosting environments a scenario where on a fresh install of Commons, there's a JS parse error

Uncaught TypeError: Cannot read property 'settings' of undefined timeago.js:13
Uncaught TypeError: Object #

has no method 'timeago'

, the dropdown styles aren't applied and of course, TimeAgo date stamps aren't replaced. Hitting admin/appearance, I get these errors:

Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in theme_get_setting() (line 1414 of /mnt/www/html/commonsintstg/docroot/includes/theme.inc). Notice: Trying to get property of non-object in theme_get_setting() (line 1451 of /mnt/www/html/commonsintstg/docroot/includes/theme.inc). Notice: Trying to get property of non-object in theme_get_setting() (line 1461 of /mnt/www/html/commonsintstg/docroot/includes/theme.inc). Notice: Undefined index: access in _menu_translate() (line 792 of /mnt/www/html/commonsintstg/docroot/includes/menu.inc). Notice: Undefined index: access in _menu_translate() (line 792 of /mnt/www/html/commonsintstg/docroot/includes/menu.inc). Notice: Undefined index: access in menu_local_tasks() (line 1970 of /mnt/www/html/commonsintstg/docroot/includes/menu.inc). Notice: Undefined index: access in menu_local_tasks() (line 1970 of /mnt/www/html/commonsintstg/docroot/includes/menu.inc). Notice: Undefined index: access in _menu_link_translate() (line 929 of /mnt/www/html/commonsintstg/docroot/includes/menu.inc). Notice: Undefined index: access in _menu_tree_check_access() (line 1512 of /mnt/www/html/commonsintstg/docroot/includes/menu.inc). Notice: Undefined index: access in _menu_link_translate() (line 929 of /mnt/www/html/commonsintstg/docroot/includes/menu.inc). Notice: Undefined index: access in _menu_tree_check_access() (line 1512 of /mnt/www/html/commonsintstg/docroot/includes/menu.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Notice: Undefined index: commons_origins in at_get_setting() (line 34 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc). Warning: array_merge() [function.array-merge]: Argument #1 is not an array in at_get_setting() (line 52 of /mnt/www/html/commonsintstg/docroot/profiles/commons/themes/contrib/adaptivetheme/at_core/inc/get.inc).

And, after hitting the appearance form, Origins isn't listed as an a theme option even though it's the enabled theme. I also notice that clean urls are disabled even though the test passes. Refreshing the appearance settings form appears to cause all of the styles to not be applied - the page is completely unstyled.