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Update. The reason I couldnt upvote you is that I had delegated most of my SteemPower away. The error message doesnt explain but I got on Discord and found several helpful people who did explain, and then one very helpful person who delegated a big chunk of SP to me, so I could complete the undelegation process. Since he loaned it to me, he can take it back with no further involvement by me.

So I am now free to post more and comment more and upvote more, so I've now upvoted your original albeit-brief comment. Because it was helpful to me, so again... thank you.

Gary