AjaxSearch 1.8.1: "iterator is not a function" error [SOLVED]

iterator is not a function
inject()()prototype.js (line 373)
inject()(div, undefined)prototype.js (line 372)
remove()()mootools.js (line 66)
initialize()("current-search-results", Object duration=600)mootools.js (line 197)
chain()()mootools.js (line 19)
empty()()mootools.js (line 16)
activateSearch()ajaxSearch.js (line 86)
pass()()mootools.js (line 45)
F()(undefined)mootools.js (line 46)
cloneEvents()(activateSearch())mootools.js (line 120)
cloneEvents()("domready", undefined, undefined)mootools.js (line 121)
A()()mootools.js (line 153)
bind()()prototype.js (line 68)
[Break on this error] memo = iterator(memo, value, index);