extract got stuck

[zsokolowski]

• Processing "Beyond Legacy Code, P1.0 (Zbigniew Sokołowski).azw3_C9BFA7F1684645929AA45FCB5CC6974F.azw3": Extracting Cover Thumb:

and then stops for ever on this ebook

[zsokolowski]

Exception in Tkinter callback
Traceback (most recent call last):
File "Tkinter.pyo", line 1470, in call
File "gui.py", line 163, in run
File "ExtractCoverThumbs.pyo", line 193, in extract_cover_thumbs
File "ExtractCoverThumbs.pyo", line 62, in get_cover_image
File "PIL\Image.pyo", line 2106, in open
File "PIL\ImageFile.pyo", line 92, in init
File "PIL\BmpImagePlugin.pyo", line 174, in _open
File "PIL\BmpImagePlugin.pyo", line 100, in _bitmap
IOError: Unsupported BMP header type (2264)