When you get this error: Object reference not set to an instance of an object.
The solution is to Reset Windows. To do this you while in iCommand go to the Window dropdown and select Reset Windows.
Note: If you have used Screen Customization to make changes to your window positions, column widths, etc. there change will be reset. You may find that you will want to make a backup of your customization first by going to Tools\Customize\Screen Customization\Save and making a backup to your install folder.
Please reach out if any further assistance is required.
Email Support: firstname.lastname@example.org