If anyone has problems with Eleos Zclassic wallet: error "Wallet daemon can not be run. Check if daemon does not already run".
I finally found the solution here:

https://www.reddit.com/r/ZClassic/comments/7vk41c/upvote_to_the_top_solution_for_zclassic_eleos/

You need install python 2.7, copy your wallet.dat in walletaid-master (https://github.com/z-classic/walletaid)

Copy your found key and import it in a electrum wallet. It seems to work  

Good luck everyone.