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1. relax. You didn't lose your coins.
2. in the console type repairwallet
3. you just got your first orphan. It worked as it should, just conflicted with a generated block. It'll go back into stake as soon as the orphan is clear.
4. You're good! It worked right.
Fixed me up, thanks so much for pointing me in the right direction. Learned something invaluable.
Since that, I've staked again.