Drakador_Chaos eyy, first here...
and first fuked up XD
Halfling.Serialization.DeserializeException: Deserialization from source "<D:\Cosmoteer\Data\rules.txt>" failed.
06/17/2020 21:00:50 | ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
06/17/2020 21:00:50 | ---> Halfling.Serialization.DeserializeException: Deserialization from source "<D:\Cosmoteer\Data\ships\terran\terran.txt>/Terran" failed.
06/17/2020 21:00:50 | ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
06/17/2020 21:00:50 | ---> Halfling.Serialization.DeserializeException: Deserialization from source "<D:\Cosmoteer\Standard Mods\Bloodcult\PrimalHunter\PrimalHunter.txt>/Part" failed.
06/17/2020 21:00:50 | ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
06/17/2020 21:00:50 | ---> Halfling.Serialization.DeserializeException: Type name 'MultiAmmoStorage' at path '<D:\Cosmoteer\Standard Mods\Bloodcult\PrimalHunter\PrimalHunter.txt>/Part/Components/AmmoPrereq/Type' is not a deserializable subclass of 'Cosmoteer.Ships.Parts.PartComponentRules'.
06/17/2020 21:00:50 | at Halfling.Serialization.Base.BaseSerializer`10.DerivedTypeDeserializationMethod.TryDeserialize(TSerializer s, TSource source, Type type, ReadFlags flags, ProgressTracker progressTracker, Object& obj)
06/17/2020 21:00:50 | at Halfling.Serialization.Base.BaseSerializer`10.Read(TSource source, Type type, ReadFlags flags, ProgressTracker pt, Single weight, String sliceName, TIBaseDeserializer overrideSpecificDeserializer, IGenericDeserializer overrideGenericDeserializer, TIBaseContentDeserializer overrideSpecificContentDeserializer, IGenericContentDeserializer overrideGenericContentDeserializer)
06/17/2020 21:00:50 | at Halfling.Serialization.Base.BaseSerializer`10.Read(TSource source, Type type, ReadFlags flags, ProgressTracker progressTracker)
06/17/2020 21:00:50 | at Halfling.Serialization.Base.BaseSerializer`10.Read[T](TSource source, ReadFlags flags, ProgressTracker progressTracker)
06/17/2020 21:00:50 | at Cosmoteer.Ships.Parts.PartRules..ctor(ObjectTextSerializer s, IOTNode node, ProgressTracker pt)
hope this is enough, if not, then just say so and i will pop the entire log file in here