if it can help anyone, I had this problem on normal update/upgrade on 16.04.05 LTS
if you notice the error message: /usr/local/bin/ckbcomp: not found
my ckbcomp was in BIN not LOCAL/BIN.
I copied it to BIN and rerun update/upgrade and the upgrade completely successfully. sorted.
if it can help anyone, I had this problem on normal update/upgrade on 16.04.05 LTS bin/ckbcomp: not found
if you notice the error message: /usr/local/
my ckbcomp was in BIN not LOCAL/BIN.
I copied it to BIN and rerun update/upgrade and the upgrade completely successfully. sorted.