I've installed the FullCalendar module in a Drupal 7.28 installation (a clean sandbox with nothing except dependencies for FullCalendar).
Following the instructions here, I'm trying to create a view for the calendar, but when I try to add a field (Content: Post date, as it shows in the instructions), upon clicking Apply, I get set to: /admin/structure/views/ajax/add-item/calendar_view_test_/page/field with a screen full of junk
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id=\u0022edit-options\u0022\u003E\u003Cdiv class=\u0022form-item description form-wrapper\u0022 id=\u0022edit-options-form-description\u0022\u003EThe date the content was posted.\u003C\/div\u003E\u003Cdiv class=\u0022form-item form-type-checkbox form-item-options-custom-label\u0022\u003E\n \u003Cinput
Anyone know the cause of the error?