Problem submitting new custom content

When I go to add custom content, it wont do it... I just get a white page with the following:

{ "type": "add", "region": "#panel-pane-right", "id": "#panel-pane-new-2", "output": "\x3cdiv class=\"panel-pane\" id=\"panel-pane-new-2\"\x3e\x3cdiv class=\"grabber\"\x3e\x3cspan class=\"buttons\"\x3e\x3ca href=\"/panels/ajax/hide/1/new-2\" class=\"panels-ajax-link pane-toggle-shown-link panels-no-modal\" title=\"Hide \x26quot;Custom\x26quot;\" alt=\"Hide \x26quot;Custom\x26quot;\"\x3e\x3cimg src=\"/sites/all/modules/panels/images/icon-hidepane.png\" alt=\"\" title=\"\" width=\"16\" height=\"16\" /\x3e\x3c/a\x3e\x3ca href=\"/panels/ajax/configure/1/new-2\" class=\"panels-ajax-link pane-configure-link\" title=\"Configure settings for \x26quot;Custom\x26quot;\" alt=\"Configure settings for \x26quot;Custom\x26quot;\"\x3e\x3cimg src=\"/sites/all/modules/panels/images/icon-configure.png\" alt=\"\" title=\"\" width=\"16\" height=\"16\" /\x3e\x3c/a\x3e\x3ca href=\"/\" class=\"pane-delete\" id=\"pane-delete-panel-pane-new-2\" title=\"Delete pane \x26quot;Custom\x26quot;\" alt=\"Delete pane \x26quot;Custom\x26quot;\"\x3e\x3cimg src=\"/sites/all/modules/panels/images/icon-delete.png\" alt=\"\" title=\"\" width=\"16\" height=\"16\" /\x3e\x3c/a\x3e\x3c/span\x3e\x3cspan class=\"text\"\x3eCustom\x3c/span\x3e\x3c/div\x3e\x3cdiv class=\"panel-pane-collapsible\"\x3e\x3ch2 class=\"title\"\x3eNo title\x3c/h2\x3e\x3cdiv class=\"content\"\x3e\x3cp\x3ethehuskybear - 2007 to current\x3cbr /\x3e\ncactusflats - 2007 to current\x3cbr /\x3e\ngreyboy - 2003 to 2007\x3c/p\x3e\n\x3c/div\x3e\x3c/div\x3e\x3c/div\x3e" }