I'll use the politically correct version of the holiday greeting. All the best to you and yours this season and in the new year.
Since starting this new job, I have stepped back to ACAD 2008 so all of those wonderful new features that I enjoyed in 2011 are not with me. Ribbon, I miss you!
One of my coworkers had that problem of not being able to select something on defpoints. Remember to check to see if layer 0 is frozen or off when this happens to you. 0 and defpoints have some weird relationship that I still don't fully understand.