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1. Sorry for the 4 posts of the same thing. The typing window wasn't closing so I kept re-posting. Then the original page showed all my posts, but it doesn't seem to give you a way to delete them.

2. The demos are working fine. They appeared to be crashing the computing, the screen flashing on an off a lot, but it turns out they were just slow at doing their thing. So if you install and run the demos you just have to be a bit patient.