Did you remove the error tag from the form?

I.e. is there a place where is says (approximately):

<%if error%> <%error%> <%endif%>

If not, could you put it in (it should tell you what the error is...)

EDIT: Also make sure there is a hidden input field

<input type="hidden" name="add" value="1" />

Ivan
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Iyengar Yoga Resources / GT Plugins