Is it the same scar error, post your scarlog.txt...
-- Log file for all error messages related to the Scar --
Starting SCAR...
EuropeInRuinsVP Initialization - OnInit
Battle ID: 208
Players: 4
Local Player: salan(1001)
eirresistance has 21 platoons defined!
salan has 20 platoons defined!
Lolto has 24 platoons defined!
AmPm has 19 platoons defined!
ADDING: 9.6000003814697
COOLDOWN: 9.6000003814697
NEXT SPAWN: 13.10000038147
ADDING: 14.39999961853
COOLDOWN: 14.39999961853
NEXT SPAWN: 18.27499961853
*FATAL SCAR ERROR: Invalid SGroup* in ParmTraits<SGroup*>::Pop
Lua @eir_rules.scar Ln 675 (EIR_DefenseSetupChecks)
Could not execute rule: EIR_DefenseSetupChecks
FATAL Scar Error while running rules - Execution has been paused.
Shutting Down SCAR...