2048R keys with a 4096R master key?

[Exordian]

i already have a 4096R masterkey, i wanted to add a new signing key to my ykneo-openpgp applet - since the yubikey does only support, i choose a keylength of 2048 bits but if i call "keytocard" gnupg reports an write error

should this setup be supported at all?

[klali]

It should work fine. You have to make sure to use applet version 1.0.5 or later and gnupg 2.0.22 or later.

[Exordian]

my bad, i've checked the dependencies before, but the scdaemon was still at 2.0.20 (gnupg 2.0.22 doesn't complained about this :/)