Alexander,
I have a list using Autocomplete as a stand alone script (no DFFS). It was working fine until I made the field required and then it wouldn’t activate. In the HTML source I noticed the field element changed to include a new span:
<nobr>FieldName <span class="ms-accentText" title="This is a required field." > *</span></nobr>
Does that break the script?
Thanks!