Hi there,

I have had the same troubles, except that I want to import a Mycelium Wallet into Electrum (running on Ubuntu).

I do have the decrypted private Key (xEncEXIChxz.....) and the compressed one (Kxyxf9TEBgz.....)

Using the built in console with "importprivkey" isn't working for me.
Is any special syntax needed (as the key is compressed )?
Could you maybe give an example to exclude wrong syntax?

fixed: restared the computer (  ) , logged in to the useraccount, opened the Xterminal (not the included console of Electrum)
electrum importprivkey Kxyandsoonblabla

after (!) that i started the wallet.
done 
Not sure why it didn't worked the first times, as i tried both consoles.

Thank you!