MEK Error

Loading 00a_introduction.map.dtz...
Traceback (most recent call last):
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\supyr_struct\field_type_methods\parsers.py", line 426, in struct_parser
    desc[i]['TYPE'].parser(desc[i], None, node, i, rawdata,
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\supyr_struct\field_type_methods\parsers.py", line 692, in f_s_data_parser
    rawdata.seek(root_offset + offset)
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\supyr_struct\buffer.py", line 247, in seek
    raise IndexError('seek position out of range')
IndexError: seek position out of range

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\refinery\main.py", line 1046, in load_maps
    new_map = self.load_map(map_path, False, ask_close_open, **kw)
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\refinery\main.py", line 1000, in load_map
    new_map = RefineryCore.load_map(
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\refinery\core.py", line 531, in load_map
    map_header = get_map_header(f, True)
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\reclaimer\meta\halo_map.py", line 152, in get_map_header
    return header_def.build(rawdata=map_file)
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\supyr_struct\defs\block_def.py", line 224, in build
    new_block.parse(**kwargs)
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\supyr_struct\blocks\list_block.py", line 814, in parse
    desc['TYPE'].parser(**kwargs)
  File "C:\Users\Steven\AppData\Local\Programs\Python\Python38\lib\site-packages\supyr_struct\field_type_methods\parsers.py", line 460, in struct_parser
    raise error from e
supyr_struct.exceptions.FieldParseError:
Error occurred while attempting to parse <class 'supyr_struct.blocks.list_block.ListBlock'>.
    map_header, index:None, offset:0, field_type:<FieldType:'Struct', endian:'=', enc:'None'>

Error occurred while attempting to load map.
If this is a PermissionError and the map is located in
a protected location, Refinery may need to run as admin.
    Make sure the map you are accessing is not read-only.
Refinery opens maps in read-write mode in case edits are
made, and opening in this mode fails on read-only files.