Drakador_Chaos Welp, this is what I was talking about when I needed someone really dedicated. Here's the next error, if you want to still help.
Halfling.Serialization.DeserializeException: Deserialization from source "<C:\Program Files\Cosmoteer\Data\rules.txt>" failed. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> Halfling.Serialization.DeserializeException: Deserialization from source "<C:\Program Files\Cosmoteer\Data\ships\terran\terran.txt>/Terran" failed. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> Halfling.Serialization.DeserializeException: Deserialization from source "<[user's home folder]\Documents\My Games\Cosmoteer\Mods\meranera_legacy_upgraded\meranera_legacy_upgraded_upgraded\volt_disruptor\volt_disruptor.txt>/Part" failed. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> Halfling.Serialization.DeserializeException: Deserialization from source "<[user's home folder]\Documents\My Games\Cosmoteer\Mods\meranera_legacy_upgraded\meranera_legacy_upgraded_upgraded\volt_disruptor\volt_disruptor.txt>/Part/Components/Turret" failed. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> Halfling.Serialization.DeserializeException: Unable to find source for non-optional field "AutoTargets" in source "<[user's home folder]\Documents\My Games\Cosmoteer\Mods\meranera_legacy_upgraded\meranera_legacy_upgraded_upgraded\volt_disruptor\volt_disruptor.txt>/Part/Components/Turret".
There will probably be more after this...