Which firmware were you on when you performed the apt-get?
For firmware V3, just follow my instructions on point 3 and be sure to note the instructions carefully else you’ll break the WD’s webGUI.
For firmware v4, apt-get doesn’t work on this firmware as it needs debs patched with 64k page size memory. If you did, most probably it’s already messed up. You’ll need to reflash the v4 firmware to fix it. Read more on the 64K page size memory http://community.wd.com/t5/WD-My-Cloud/Building-packages-for-the-new-firmware-someone-tried-it/td-p/768007
