Some times it does this - you would appear to be just not subscribing to the category correctly. Define/Category Styles and under Public Event Server select those which you want to access.Otherwise go to Define/Categories/drop down change from "=Private=" to "PubEventServer" or whatever you have called it and you will see your Categories.
Hope that that helps.
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Simon
http://www.bramshaw.com.au
Melbourne - Australia GMT +1100