Some recent compatibility issues I found for to AutoCAD and Revit. This problem happens because of some updates. Check this if you have issues recently.
Up and Ready: Boldly install, configure, & deploy Autodesk software
Check this Autodesk blog that covers product support: installation, configuration, licensing, deployment, and more!
The Best, the Rest, the Rare: 100 AutoCAD Tips You Should Know
A compilation of AutoCAD tips. Read all 100 of them to increase your productivity!