This tool will check a DCS mission.miz, if it contains invalid mods (and other things).
The tool is a command line tool. Start it with parameter -? to read about different options.
Samples:
DcsMissionValidator.exe -dir:"D:\MyMissions" -txt
DcsMissionValidator.exe -file:"D:\MyMissions\SuperMission.miz"
DcsMissionValidator.exe -file:"D:\MyMissions\SuperMission.miz" -dir:"D:\MyMissions" -txt -sim
DcsMissionValidator.exe -rec:"D:\MyMissions"
DcsMissionValidator.exe -mon:"D:\MyMissions" -txt
DcsMissionValidator.exe -file:"D:\MyMissions\SuperMission.miz" -cfg:"d:\myconfig.xml"