Why do you have almost every setting disabled including settings that aren't even relevant for your installation (i.e Custom syslog location), no wonder you are getting errors. I suggest uninstalling Skynet followed by a reinstall to correct these and only change settings if you are aware of what it actually does.
I didn't change any settings manually. It should actually be the default state. Could it be that someone hack/accessed my router (and disabled my firewall)?
Or is there a fallback switch in Skynet that disables features in case of errors (maybe this is somewhat related to my installation to the USB swap drive and the fact that I switch off my router every night.. which theoretically could lead to disk errors during a write process). Will start using the wireless scheduler instead now...
I just reinstalled it - seems to work now.