Hi,
I just looked and the file EditImage.aspx has this control declaration at the top that I did not realize was there:
<%@ Register TagPrefix="NeatUpload" Namespace="Brettle.Web.NeatUpload" Assembly="Brettle.Web.NeatUpload" %>
If you remove that it should fix the problem. I will update the release packages to fix this asap.
Hope that helps,
Joe