When doing the Jailer tonight this error popped up. Not sure what caused it, but it happened in the second phase. My DBM is version 10.0.0

2x Interface/AddOns/DBM-Sepulcher/TheJailer.lua:642: attempt to compare number with nil
[string "@Interface/AddOns/DBM-Sepulcher/TheJailer.lua"]:642: in function `handler'
[string "@Interface/AddOns/DBM-Core/DBM-Core.lua"]:928: in function <Interface/AddOns/DBM-Core/DBM-Core.lua:915>
[string "=(tail call)"]: ?
[string "@Interface/AddOns/DBM-Core/DBM-Core.lua"]:928: in function <Interface/AddOns/DBM-Core/DBM-Core.lua:915>

Locals:
Skipped (In Encounter)

Did you reload ui middle of fight?
That error could only happen if you reloaded ui in middle of a torment cast and before your variables had recovered from comms

It's possible, I was having LUA errors stopping me from using my actionbars. I can't recall exactly, but I was /reloading throughout the night

closing this, as there is really no way to fix it, other than blizzard to fix their crappy 10.0 ui code so users don't have to reload mid combat to cast spells