I have this issue on a MAC. The components options dialog simply says: ‘No components selected’ while the Attributes dialog has the information.
I have had this for some time now, but can’t detect a specific reason or reproducible workflow. However, my workaround is this: go to the extension manager, disable DC, quit SketchUp and then restart SU and enable the DC extension again. Now: component option show up ,again!
@DanRathbun Since I thought it had to do with my personal (Mac) setup and was not encountering this issue on the Windows bootcamp SU-version, I figured it was not a SketchUp-bug. Turns out the OP is on Windows and has encountered the same issue.