I want to place a component DC639 but my library does not have the user contributed tab. I am running 64 bit windows desktop edition in team work run mode. I have registered. I have also tried running it from firefox online with same result. Can anyone tell me what is the problem and how to fix it?. I've spent a day looking and search to no avail, so frustrating. 
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
Type something in the Search box and press enter. The User Contributed library tab should appear.