I finished the companions questline along time ago and I did a quest for Skjor called Family Heirloom . I returned to Jorvaskrr but I can't seem to find Skjor anywhere.

The objective tracker doesn't work aswell. Can he be dead? but if hes dead how do I complete the quest?

Is it a bug or something? I have the unnoficial Skyrim patches for vanilla, dawnguard and hearthfire installed.