Metroid II: Return of Samus doesn't load.

[TheMetroid7998]

Summary

Simply put, Bizhawk [v2.6] refuses to load Metroid II and any of its romhacks. Core loaded is Gambatte, but the other 2 are broken as well. I've tried changing the name, (because I saw the 'illegal characters in path' line in the error report) no dice.

Unmodified Rom Hash: SHA256 - 3080BCC2EB9965DE463F5F4E02F0DABBB13B060E1654A18DA8B50948C10AF4A6

Repro

1. Aquire a copy of Metroid 2. This can be the original Gameboy version or the EJRTQ rom hack.
2. Attempt to load the room via any means, either by setting a file association, opening in bizhawk, etc.
3. Get the error message.

Output

---------------------------
load error
---------------------------
A core accepted the rom, but threw an exception while loading it:

System.ArgumentException: Illegal characters in path.

   at System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional)

   at System.IO.Path.GetExtension(String path)

   at BizHawk.Common.HawkFile.<>c__DisplayClass36_0.<BindByExtensionCore>b__1(HawkArchiveFileItem item)

   at System.Linq.Enumerable.WhereListIterator`1.MoveNext()

   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)

   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)

   at BizHawk.Common.HawkFile.BindByExtensionCore(Boolean first, String[] extensions)

   at BizHawk.Client.Common.RomLoader.HandleArchiveBinding(HawkFile file)

   at BizHawk.Client.Common.RomLoader.LoadRom(String path, CoreComm nextComm, String launchLibretroCore, String forcedCoreName, Int32 recursiveCount)
---------------------------
OK   
---------------------------

Host env.

• BizHawk 2.6; Win10 Home 20H2; Intel/NVIDIA
  //: # "
  
  "

[nattthebear]

Duplicate of #2587