WowAce

What steps will reproduce the problem?
1. Unknown specifically - raid frames are up with fader active.  Occasionally happens when new players join a bg

What is the expected output? What do you see instead?

Normal combat raid frame, instead all raid/player frames remain "static" and unchanging (health, etc.) and the error occurs.

What version of the product are you using?
r78496

Do you have an error log of what happened?
Interface\AddOns\PitBull\CombatFader\CombatFader.lua:232:attempt to perform arithmetic on field 'cfstop' (a nil value)

Please provide any additional information below.