I'm trying to upload the file "Skifta 1.0.3" to my ReadyNAS with 4.18. I get note that the file is not valid for this structure (translated from Swedish Uppdateringsfilen är inte giltig för den här arkitekturen).
I have tried with Firefox, IE9 and Chrome (all updated)
I wouldn't worry about it. Skifta.com have changed their authentication server, which has broken the current version of the add-on anyway. And all references to it from the main ReadyNAS website have since dissappeared, so i'm thinking Skifta has gone the same way as Orb as far as Netgear are concerned.
I wish Netgear would choose a provider AND BLOODY WELL STICK TO IT, or just avoid partnerships like this altogether. Fed up of creating accounts for these types of service only for Netgear to pull support for them without warning or notification. It's getting old.
I've got an NV+, and I get the same error when I try to install this add-on. I'm guessing that means that the NV+ won't run it. Probably moot based on the above post anyways, but I looking forward to testing Skifta.