May be you accidentally replaced some dependencies. I assumed you’re still on firmware version v3. Just download the v3 firmware and reflash. If you’re using v4, just replace the url and unzip filename. After the device reboot, if your dashboard messed up, do a quick system restore.
Download:
wget http://download.wdc.com/nas/sq-030401-230-20140415.deb.zip
Unzip:
unzip sq-030401-230-20140415.deb.zip
Update:
/usr/local/sbin/updateFirmwareFromFile.sh sq-030401-230-20140415.deb
