Hi @Mr.Wireman, thank you for the mod. Here is more info for the error. I hope this helps!

Mod mrwireman.gausscannon has multiple Verse.ResearchProjectDefs named GravShipResearch. Skipping.
[Harmony, 0Harmony.dll] MonoMod.Utils.DynamicMethodDefinition.UnityEngine.StackTraceUtility.ExtractStackTrace_Patch1()
[Harmony, 0Harmony.dll] MonoMod.Utils.DynamicMethodDefinition.Verse.Log.Error_Patch2(System.String)
[Core, Assembly-CSharp.dll] Verse.DefDatabase`1[[Verse.ResearchProjectDef, Assembly-CSharp, Version=1.6.9348.31746, Culture=neutral, PublicKeyToken=null]].AddAllInMods()
[System, mscorlib.dll] System.Reflection.RuntimeMethodInfo.InternalInvoke(System.Reflection.RuntimeMethodInfo, System.Object, System.Object[], System.Exception&)
[System, mscorlib.dll] System.Reflection.RuntimeMethodInfo.Invoke(System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture)
[System, mscorlib.dll] System.Reflection.MethodBase.Invoke(System.Object obj, System.Object[] parameters)
[Core, Assembly-CSharp.dll] Verse.GenGeneric.InvokeStaticMethodOnGenericType(System.Type genericBase, System.Type genericParam, System.String methodName)
[Core, Assembly-CSharp.dll] Verse.PlayDataLoader+<>c.<DoPlayLoad>b__4_0(System.Type defType)
[System, mscorlib.dll] System.Threading.Tasks.Parallel+<>c__DisplayClass33_0`2[[System.Type, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Object, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].<ForEachWorker>b__0(System.Int32 i)
[System, mscorlib.dll] System.Threading.Tasks.Parallel+<>c__DisplayClass19_0`1[[System.Object, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].<ForWorker>b__1(System.Threading.Tasks.RangeWorker& currentWorker, System.Int32 timeout, System.Boolean& replicationDelegateYieldedBeforeCompletion)
[System, mscorlib.dll] System.Threading.Tasks.TaskReplicator+Replica`1[[System.Threading.Tasks.RangeWorker, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].ExecuteAction(System.Boolean& yieldedBeforeCompletion)
[System, mscorlib.dll] System.Threading.Tasks.TaskReplicator+Replica.Execute()
[System, mscorlib.dll] System.Threading.Tasks.TaskReplicator+Replica+<>c.<.ctor>b__4_0(System.Object s)
[System, mscorlib.dll] System.Threading.Tasks.Task.InnerInvoke()
[System, mscorlib.dll] System.Threading.Tasks.Task.Execute()
[System, mscorlib.dll] System.Threading.Tasks.Task.ExecutionContextCallback(System.Object obj)
[System, mscorlib.dll] System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx)
[System, mscorlib.dll] System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx)
[System, mscorlib.dll] System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task& currentTaskSlot)
[System, mscorlib.dll] System.Threading.Tasks.Task.ExecuteEntry(System.Boolean bPreventDoubleExecution)
[System, mscorlib.dll] System.Threading.Tasks.Task.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
[System, mscorlib.dll] System.Threading.ThreadPoolWorkQueue.Dispatch()
[System, mscorlib.dll] System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()