What happened
On importing this package (attached to this bug report, or it can be found on Asset Store - https://www.assetstore.unity3d.com/en/#!/content/58948 ) the error with empty name appears. Seems package works ok after that, so probably harmless error...

How we can reproduce it using the example you attached
1 Create new project
2 Import attached to this bug report package ("NAT Traversal.unitypackage")

Actual results:
error with empty name/title appears -

System.InvalidOperationException: Operation is not valid due to the current state of the object.
at Mono.Cecil.ModuleDefinition.ProcessDebugHeader () <0x2832918 + 0x000db> in <filename unknown>:0
at Mono.Cecil.ModuleDefinition.ReadSymbols (ISymbolReader reader) <0x28328b8 + 0x0001f> in <filename unknown>:0
at Mono.Cecil.ModuleReader.ReadSymbols (Mono.Cecil.ModuleDefinition module, Mono.Cecil.ReaderParameters parameters) <0x280a308 + 0x000a3> in <filename unknown>:0
at Mono.Cecil.ModuleReader.CreateModuleFrom (Mono.Cecil.PE.Image image, Mono.Cecil.ReaderParameters parameters) <0x2807300 + 0x0009b> in <filename unknown>:0
at Mono.Cecil.ModuleDefinition.ReadModule (System.IO.Stream stream, Mono.Cecil.ReaderParameters parameters) <0x2801dd0 + 0x0005b> in <filename unknown>:0
at Mono.Cecil.AssemblyDefinition.ReadAssembly (System.IO.Stream stream, Mono.Cecil.ReaderParameters parameters) <0x2832660 + 0x0001b> in <filename unknown>:0
at AssemblyUpdater.Core.AssemblyUpdaterContext.ReadAssembly (System.String assemblyPath, IAPIUpdaterListener listener, FileAccess mode, System.String[] searchPaths) <0x2830130 + 0x0014b> in <filename unknown>:0
at AssemblyUpdater.Core.AssemblyUpdaterContext.From (System.String assemblyPath, IConfigurationProvider configuration, System.String[] assemblySearchPaths, UpdaterMode mode, IAPIUpdaterListener listener) <0x2830048 + 0x00073> in <filename unknown>:0
at AssemblyUpdater.Core.AssemblyUpdaterContext.From (System.String assemblyPath, System.String[] assemblySearchPaths, UpdaterMode mode, IAPIUpdaterListener listener) <0x2830008 + 0x0002f> in <filename unknown>:0
at AssemblyUpdater.Application.Program.CheckForObsoleteAPIUsage (AssemblyUpdater.Application.CommandLineSpec config) <0x2811828 + 0x00043> in <filename unknown>:0
at AssemblyUpdater.Application.Program.Main (System.String[] args) <0x27b0f18 + 0x000fb> in <filename unknown>:0

Expected results:
no errors should appear