Hi Alistar, Have you assigned a symbol to the element / element template? Need to do that first then when you drag an element from the browser onto the display it will show the symbol. Not seen 'No Entry' message before.
As per Rhys' suggestion, this is probably just a matter of "assigning" a element to the template.
As a side (and friendly!) note, please keep in mind that regular technical support (firstname.lastname@example.org - +1-510-297-5828) is still available and should be the preferred channel for "PI Admin" and "End Users" type questions. People in the regular technical support team will most likely be able to provide more timely answers on questions pertaining to pure PI management and "out-of-the-box" usage of our software (like this question).
The spirit of vCampus is to really focus on "for developers, by developers" and provide a great portal for "PI Programming & Integration" related questions and resources. We understand there sometimes is a fine line between the 2 categories of question and it is normal that we see some overlaps... but over time, the goal is to achieve this "level of segregation" and direct our customer and partner base to the best-suited resources we have to offer. Hope this helps!
Are you using AF 1.x or AF 2.0 as your AF server? If you are using AF 2.0, make sure you have installed the AF compatibility layer that would make AF 1.x based client tools to work against AF 2.0.