ADO.NET Datasets and .NET Objects

Hi there,

A little background:
I am using VS2005 and creating some reports. I am grabbing data from different sources and doing a lot of calculations on the back end before it ever gets stuffed into a report. In reality the reports are just being used to do the layout and display - very little actual formula's in them. For this reason I am using mostly homemade datasets. That is I go to project -> add new -> and add a dataset, then I create the table in the designer. See what I mean? Cool!

The question:
All this is working swell, there is just one weird anomaly. Today one of my datasets decided to show up as a .NET Object instead of a ADO.NET Dataset when I look at it in the crystal reports database expert. For a minute there is wouldn't work but now it will so it isn't a huge deal I am just confused.

It looks like any other dataset I have created, by the way, they all still show up in the ADO.NET Dataset list. I can't see a difference and I don't frankly know what the difference is being that the database expert sees them in different ways...

can anyone fill me in?

Thanks!