When uploading an image to the library you may receive the following error "Object Reference not set to an instance of an object"

No template is defined for the root folder

1. Log into the workarea
   
2. Click on Content tab
   
3. Right click on the root folder and click view properties
4. Edit the properties and make sure a default template is selected/added. 
5. If not, select a template from the list, add it and click update