Great, you got that glitch sorted out, it's possible that you attempted to install applications during the minor repo outage .? Sorry, Hate that :p
You'll find tinycore is easy to resolve issues like this, it's just a question of a little patience.
I think a kmaps tutorial is in the FAQ at the top of this web site however I also suggest "The TinyCore Book" which is useful to have nearby when new to tc
Good luck
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