DNS Resolver (unbound) / Can't change config

[ProfessorManhattan]

Possible Solution for Those Who are Using RAM Disk
If you are using the feature where /var is stored in RAM. This issue will arise if the /var folder is at capacity. To fix, go to System->Advanced->Miscellaneous-> RAM Disk Size and increase the RAM disk size so that it is not at capacity.

After you increase the size of the RAM disk, you need to reboot by going to Diagnostics->Reboot.

You can verify that you have enough space allocated by going to the Dashboard and then scrolling to the bottom of the System Information widget. You should give /var some wiggle room.