New Web Application Designer problem

Hi all,

I am building a web template in the new Web Application Designer. I have added a tab page. Within this tab page I have added a container item. Within the container item a chart is present.

Now I get the error message: 'Duplicate item names detected in Graph1 and Graph1; 2nd will be ignored.'

I have changed the name of the chart in Chart1 but I get the same message.

When I run the web template an error message pops up that says: 'Web item with the name "GRAPH1" already exists in Web template "main_template'

How to solve this?

Thanks in advance,

Ralph