Dedicated Server Crash (AccessViolationException)

Our dedicated server crashed (console said "Server was stopped" but logs show an exception), with 3 people on it, while we were attacking a ground base (spawned by a mod).

This is the exception:

Exception occured: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at hkpBvCompressedMeshShape.{ctor}(hkpBvCompressedMeshShape* , hkpBvCompressedMeshShapeCinfo* )
   at Havok.HkBvCompressedMeshShape.initShape(Vector3* vertices, Int32 verticesCount, Int32* indices, Int32 indicesCount, Byte* materials, Int32 materialsCount, HkWeldingType weldingType, Single convexRadius)
   at Sandbox.Engine.Voxels.MyVoxelPhysicsBody.CreateShape(VrVoxelMesh mesh, Int32 lod)
   at Sandbox.Engine.Voxels.MyPrecalcJobPhysicsPrefetch.DoWork()
   at VRage.Voxels.MyPrecalcComponent.Work.ParallelTasks.IWork.DoWork(WorkData workData)
   at ParallelTasks.WorkItem.DoWork(Int32 expectedID)
   at ParallelTasks.PrioritizedScheduler.Worker.WorkerLoop()
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

I can also upload the Minidump.dmp file if you like, but I don't know if it contains private information.