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I see. So it seems mining either bitcore or zcash doesn't make a big difference. For some reason, following this tutorial, I get an error (illegal memory access) every few minutes, and mining stops. =( I've asked the author of the video about it, so I hope he can help.

What would you recommend mining - bitcore or zcash? I am really in two minds here...

Hmm strange, have you tried upgrading the miner itself?
They update em fairly frequently

Actually, not. I tried, but I get lost in all those different releases and versions... Could you provide a link to the one you're currently using, please?

Once I get home I can

No worries. I actually found one myself, and I still get the same error. Doesn't seem to be a common error either, I can't find anything on it. Back to mining bitcoin with Nicehash, I guess