Limit on number of series in bubble charts?

Hello all,
I need to use a bubble chart in one of my visualizations (Xcelsius Engage 2008, Excel model only - no live connection), showing gross sales and margin for 13 categories series. If I map the series(es) individually, then they all show on the legend, and the graph limits change as I use the list box selector to choose the particular customer, but no bubbles - or any indication of data points - show up on the graph.
If, however, I choose to map to a range, I do see data points - but only for the first 6 of the 13 categories. I've checked the cell range to ensure all 13 categories are included in the selection, and they are, but - again - only 6 show up, or get mapped to the "series" box.
I've resized to cover more real estate, thinking perhaps Xcelsius just didn't want to display bubbles on a smallish graph field, but with no change in the display results. I have a tree map linked to the exact same data, in the same location, and it works just fine. But nobody likes the tree map; they want bubbles.
Am I missing something, or is there a limit on the number of series a bubble chart is capable of displaying?
Edited by: Jennifer Leppert on Aug 15, 2008 12:34 PM
Two swfs showing the difference and the xlf are located at http://www.mediafire.com/?sharekey=9e4101c4b4a3cdc1d2db6fb9a8902bda. Check under the "AEL" tab.

Thank you for the response, Javier. Unfortunately, it doesn't quite answer the problem.
I have tried mapping the series individually. While the interface will capture all of the label data, the graph itself does not show any data points when switching to preview mode, or exporting to another file type. (See "Manual Series.swf" at the link in my initial post for a visual).
The X and Y axes are correct, and do adjust depending on the customer selected in the list box, but, again, no bubbles show up. Is there something else I'm missing, or not doing correctly? I have an evaluation copy - perhaps it is a limit in the eval copy that would disappear upon registration of a full license?

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[http://i49.tinypic.com/wgpa8h.jpg |http://i49.tinypic.com/wgpa8h.jpg ]
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