Symptom
A mobile database has already been created. Then one of the previously-specified Source or Destination Sites (as seen on the Create Mobile Database screen) was deleted from the Site list in the PC's InventoryControl client. When the Create Mobile Database process is attempted again, one or both of the sites is blank. When the Next button is clicked, the error occurs:
Application Error
An unexpected error occurred in the InventoryControl application. Please contact Wasp Barcode technical support.
This error has been logged to the application's log file.
Press OK to continue.
Resolution
Set the blank popdown to a current value. Now when clicking Next, the process should continue normally.
More information:
Path to log file:
C:\ProgramData\Wasp Barcode Technologies\InventoryControl\4.0.0.0\InventoryControl.log
... which contains this set of messages:
2019-05-21 13:17:05.423 1 ERROR | ******** Unhandled Exception ********
2019-05-21 13:17:05.423 1 ERROR | Object reference not set to an instance of an object.
2019-05-21 13:17:05.423 1 ERROR | at Wasp.Wizard.MobileDeviceCommWizard.ValidateStep21()
| at Wasp.Wizard.MobileDeviceCommWizard.ValidateTabStep(Int32 nTab, Int32 nTabStep)
| at Wasp.Wizard.WizardBaseWithTabs.WtNextButton_Click(Object sender, EventArgs e)
| at System.Windows.Forms.Control.OnClick(EventArgs e)
| at System.Windows.Forms.Button.OnClick(EventArgs e)
| at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
| at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
| at System.Windows.Forms.Control.WndProc(Message& m)
| at System.Windows.Forms.ButtonBase.WndProc(Message& m)
| at System.Windows.Forms.Button.WndProc(Message& m)
| at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
| at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
| at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)