Make Enemizer Check a bit more multithreading resilient.

Rom.py

@@ -10,6 +10,7 @@ import random
 import struct
 import sys
 import subprocess
+import threading
 
 from BaseClasses import CollectionState, ShopType, Region, Location
 from Dungeons import dungeon_music_addresses
@@ -146,7 +147,11 @@ def read_rom(stream) -> bytearray:
     return buffer
 
 
+check_lock = threading.Lock()
+
+
 def check_enemizer(enemizercli):
+    with check_lock:
         if getattr(check_enemizer, "done", None):
             return
         if not os.path.exists(enemizercli) and not os.path.exists(enemizercli + ".exe"):
@@ -156,17 +161,16 @@ def check_enemizer(enemizercli):
             try:
                 import pythoncom
                 from win32com.client import Dispatch
+                pythoncom.CoInitialize()
             except ImportError:
                 logging.info("Could not check Enemizer Version info as pywin32 bindings are missing.")
             else:
                 # version info is saved on the lib, for some reason
                 library = os.path.join(os.path.dirname(enemizercli), "EnemizerLibrary.dll")
-            pythoncom.CoInitialize()
                 ver_parser = Dispatch('Scripting.FileSystemObject')
                 info = ver_parser.GetFileVersion(library)
 
-            if info == 'No Version Information Available':
-                info = None
+                if info != 'No Version Information Available':
                     version = tuple(int(part) for part in info.split("."))
                     if version < (6, 1, 0, 222):
                         raise Exception(