[*]Login > Chart > Perio Chart > Error (see below)
[*]Occurs for all patients.
QUESTION: Am I okay to use the Setup_26_2_9 setup file (my previous version) to roll back version only?
Open Dental
[*]Open Dental version: 26.2.17.0
[*]Service version: 10.5
[*]Config: Middle Tier; however, issue occurs on both clients and servers.
Error:
Code: Select all
Error Encountered - 09/02/2026 10:58:57 AM
Unhandled exception : Object reference not set to an instance of an object.
System.NullReferenceException
at WpfOD.CtrlPerio.ClearDataArray() in C:\Development\Versioned\OpenDental\WpfOD\UI\Controls\UserControls\CtrlPerio.xaml.cs:line 999
at WpfOD.CtrlPerio.LoadData(Boolean selectCell) in C:\Development\Versioned\OpenDental\WpfOD\UI\Controls\UserControls\CtrlPerio.xaml.cs:line 512
at OpenDental.FormPerio.FillGrid(Boolean selectCell) in C:\Development\Versioned\OpenDental\OpenDental\Forms\FormPerio.cs:line 166
at OpenDental.FormPerio.FormPerio_Load(Object sender, EventArgs e) in C:\Development\Versioned\OpenDental\OpenDental\Forms\FormPerio.cs:line 740
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at OpenDental.FormODBase.OnLoad(EventArgs e) in C:\Development\Versioned\OpenDental\OpenDental\UI\BordersDpi\FormODBase.cs:line 404
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at OpenDental.FormODBase.WndProc(Message& m) in C:\Development\Versioned\OpenDental\OpenDental\UI\BordersDpi\FormODBase.cs:line 1545
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)