When I select a Manage Dimension Styles icon or ribbon command, I receive the message "Unknown key-in or command" in the Message Center, and obviously, no dialog box appears to make edits to my dimension styles. This started when I upgraded MSC to Update 17, version 10.17.02.61. Anyone out there with an answer? Thanks!
Did you try Repairing the Installation ?
Yes. Same results. I will try a full reinstall. Sounds like a lot for a small issue like this.