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When I upgraded to 2.0.10 I had some blocks that weren't showing on the front page so I tried to make a new block with the same content.
When I created the new block I got this same "Valid token expired" thing.
So I immediatly tried again and it worked, and the original block showed at that point also.
When I found this post I checked gzip compression, and it is set to off, so there has got to be another solution.
Any ideas?
Thanks,
Steve