UI form elements fail to load via AJAX

Ok I just commented out the line throwing the error and it seems to work.

//$property_info['properties'] += $site_info['properties'];

EDIT: Ok it only work for some things. I am trying to create a node on user registration. I can choose the entity type of Node, but the AJAX fails to load any subsequent fields where I assume I can choose Node Type.

The request is returning the following JSON data, and the page flickers, but nothing changes.

[{"command":"settings","settings":{"basePath":"\/","pathPrefix":"","ajaxPageState":{"theme":"adaptivetheme_admin","theme_token":"VGf3a9tjz_ho3CThGV0F9CsNL9VGfOTnBoFVb5YReM0","js":{"misc\/form.js":1}}},"merge":true},{"command":"insert","method":"prepend","selector":"head","data":"\u003Cscript src=\u0022http:\/\/winesecure7.oberian.ggprojects.com\/misc\/form.js?v=7.16\u0022\u003E\u003C\/script\u003E\n","settings":null},{"command":"insert","method":null,"selector":null,"data":"\u003Cdiv id=\u0022rules-form-wrapper\u0022\u003E\u003Cform action=\u0022\/admin\/config\/workflow\/rules\/reaction\/manage\/rules_reminder_creation\/add\/1\/action\u0022 method=\u0022post\u0022 id=\u0022rules-ui-add-element--2\u0022 accept-charset=\u0022UTF-8\u0022\u003E\u003Cdiv\u003E\u003Cfieldset class=\u0022form-wrapper\u0022 id=\u0022edit-parameter-type\u0022\u003E\u003Clegend\u003E\u003Cspan class=\u0022fieldset-legend\u0022\u003EEntity type\u003C\/span\u003E\u003C\/legend\u003E\u003Cdiv class=\u0022fieldset-wrapper\u0022\u003E\u003Cdiv class=\u0022fieldset-description\u0022\u003ESpecifies the type of the entity that should be created.\u003C\/div\u003E\u003Cdiv class=\u0022form-item form-type-select form-item-parameter-type-settings-type\u0022\u003E\n \u003Clabel for=\u0022edit-parameter-type-settings-type\u0022\u003EValue \u003Cspan class=\u0022form-required\u0022 title=\u0022This field is required.\u0022\u003E*\u003C\/span\u003E\u003C\/label\u003E\n \u003Cselect id=\u0022edit-parameter-type-settings-type\u0022 name=\u0022parameter[type][settings][type]\u0022 class=\u0022form-select required\u0022\u003E\u003Coption value=\u0022\u0022 selected=\u0022selected\u0022\u003E- Select -\u003C\/option\u003E\u003Coption value=\u0022comment\u0022\u003EComment\u003C\/option\u003E\u003Coption value=\u0022node\u0022\u003ENode\u003C\/option\u003E\u003Coption value=\u0022taxonomy_term\u0022\u003ETaxonomy term\u003C\/option\u003E\u003Coption value=\u0022taxonomy_vocabulary\u0022\u003ETaxonomy vocabulary\u003C\/option\u003E\u003Coption value=\u0022user\u0022\u003EUser\u003C\/option\u003E\u003C\/select\u003E\n\u003C\/div\u003E\n\u003C\/div\u003E\u003C\/fieldset\u003E\n\u003Cinput type=\u0022hidden\u0022 name=\u0022form_build_id\u0022 value=\u0022form-d4BkS4wbuHZsW0T59POZy1ZA7bqv_8ecyACC53KBwo4\u0022 \/\u003E\n\u003Cinput type=\u0022hidden\u0022 name=\u0022form_token\u0022 value=\u0022si3VJA530gCqoUyOMTn__bAHq4onJiN-FX7BQTe0GZc\u0022 \/\u003E\n\u003Cinput type=\u0022hidden\u0022 name=\u0022form_id\u0022 value=\u0022rules_ui_add_element\u0022 \/\u003E\n\u003Cinput type=\u0022submit\u0022 id=\u0022edit-reload\u0022 name=\u0022reload\u0022 value=\u0022Continue\u0022 class=\u0022form-submit\u0022 \/\u003E\u003C\/div\u003E\u003C\/form\u003E\u003C\/div\u003E","settings":null},{"command":"insert","method":"prepend","selector":null,"data":"","settings":null},{"command":"insert","method":"prepend","selector":"head","data":"\u003Clink type=\u0022text\/css\u0022 rel=\u0022stylesheet\u0022 href=\u0022http:\/\/fonts.googleapis.com\/css?family=Asap:700,700italic,italic,regular|Voltaire:regular\u0026amp;subset=latin-ext,latin\u0022 media=\u0022all\u0022 \/\u003E\n","settings":null}]

heh, thats exactly how I worked around it too

Hmm I have UUID enabled as well. Unfortunately it is a requirement for the Course module, so I need it.