ppk with encryption doesn't work

[tuloski]

I try to connect via a .ppk encrypted private key generated with puttygen (RSA 2048). It works smoothlessly with putty.
I put the option to prompt the Passphrase. I added the Host and the username in the config.
All I get is:
"Error while connecting to SSH FS xxx: All configured authentication methods failed".

I don't really know what's the problem since the error is very generic.

[SchoofsKelvin]

I'll mark this as a duplicate of #435 as it seems to be the same issue. If you could follow the instructions there to add the related logs, that'd be appreciated.