I had the same error. Could this be a problem with the 'newui'? Seemed to me I recieved this error when new lines were added to the 'chat'.
MIXX-PC, 13.08 2015 11:37:18
Wrong parameter value
CLI params: C:\Games\steamapps\common\DayZ\DayZ.exe cpucount 4 exThreads 7 high newui nologs nosplash window