diff --git a/darkflow/utils/loader.py b/darkflow/utils/loader.py
index 723560df5..12ca69b26 100644
--- a/darkflow/utils/loader.py
+++ b/darkflow/utils/loader.py
@@ -114,11 +114,15 @@ def __init__(self, path):
             return
         else: 
             self.size = os.path.getsize(path)# save the path
-            major, minor, revision, seen = np.memmap(path,
+            major, minor, revision = np.memmap(path,
                 shape = (), mode = 'r', offset = 0,
-                dtype = '({})i4,'.format(4))
+                dtype = '({})i4,'.format(3))
             self.transpose = major > 1000 or minor > 1000
-            self.offset = 16
+            if ((major*10 + minor) >= 2 and major < 1000 and minor < 1000):
+                import ctypes
+                self.offset = 12 + ctypes.sizeof(ctypes.c_size_t)
+            else:
+                self.offset = 16
 
     def walk(self, size):
         if self.eof: return None
@@ -149,4 +153,4 @@ def model_name(file_path):
         num = int(file_name[-1])
         return '-'.join(file_name[:-1])
     if ext == 'weights':
-        return file_name
\ No newline at end of file
+        return file_name