If you have Autodesk Application Manager installed, and if you'd like to see if it will let you acquire the updates, you can try a right-click on the icon in the system tray and choose Check Now.

Revit 2015 Update Release 11 - Release Notes It did seem that users could avoid it (the background processing error) if they were careful to save their project, close Revit and restart it before attempting to print those views. Hopefully this update does resolve the issue they were having. Those seemed related to printing views that have a color fill applied but maybe that's a minor difference from the code's perspective. That doesn't sound like the issue I read about specifically. In the release notes they reference color fills when closing a document that uses them. Autodesk acknowledged the issue and they've just issued an update for called Revit 2016 R2 Update 1, and there is an Update Release 11 available now for Revit 2015. I was reading recently (in a couple forums) about a problem with background processing and views using Color Fills. When everything is assigned correctly you can see this family tree in the System Browser. This relationship continues up through the grandparents, great grandparents etc. For example, you start with a receptacle and create a power circuit (system), then choose the Daddy, the electrical panel it gets power from.

The other day we were chatting about this in class and I blurted out 'You know, like who's your Daddy?' I was kidding but one of the guys said that it will actually help him remember to start with the 'child' part of the relationship. It could be with conduit or cable tray but no such relationship exists yet. In contrast the physical relationship is described with duct/pipe but there is no equal for electrical systems. Revit MEP elements, like electrical panels and receptacles or HVAC equipment and diffusers, have a Parent - Child relationship. I emphasize this concept in every session I do that is focused on Revit MEP and I think it's worth stating again.

This is an echo of a post from October 2011.

Autodesk revit mep version downgrade