is 20358 the current block
You got on the same fork I was on, which is apparently the wrong fork. I deleted the "blocks" directory to force a re-download, which my wallet is in the process of doing. I suggest you do the same.
I think I shall do that....
But first I shall go off and mine something else and have a cup of tea, and wait for the fur to stop flying.
There's a lot of pussycats getting themselves into a state. They (and I) may have lost an evening's production, but that's the way it goes sometimes.