I do the following test in your online samples :
1. I choose PivotGrid - XMLADatasource.
2. I choose in Rows the 'Sales Territory' hierarchy.
3. I choose in Columns the 'Date Calendar' hierarchy.
4. I choose in Measures 'Internet Sales Amount'
5. I expand 'Date Calendar' to view the quarters.
6. I expand 'Sales Territory' to view continents and countries.
7. I expand 'France' and the pivotGrid loses all its data.
This is a known issue we are going to fix for the next service release. This error occurs when the item you're trying to expand actually has no children.
Thanks.Plamen.
Hi,
I'm creating a case for you and linking you to the development issue that Plamen mentioned.
You will hear from me shortly thru the case.