[Solved] GroupDescriptors.Clear() throwing a NullReferenceException

[Teddy Stotis]

Whenever the content of my grid changes, it seems like I always have to reapply the group descriptors, which is fine, but in the following code snippet where the groups are reset, the GroupDescriptors.Clear() call returns a NullReferenceException probably around 1 out of every 5 times.

public void SetGroups()
{
    GroupDescriptor groups = new GroupDescriptor();
    groups.Member = "AccountData.Name";
    groups.SortDirection = ListSortDirection.Ascending;
    if (gvOrdersAlerts.GroupDescriptors != null &&
        gvOrdersAlerts.GroupDescriptors.Count > 0)
        gvOrdersAlerts.GroupDescriptors.Clear();
    gvOrdersAlerts.GroupDescriptors.Add(groups);
}

After the exception, the grid behaves weird until this code is run again.  Any ideas as to why this is happening?

[Veselin Vasilev]

Hello Teddy Stotis,

This is strange. What is the exact version you are using?
Can you reproduce the problem in a simple project?

Sincerely yours,
Veselin Vasilev
the Telerik team