Traceback (most recent call last):


 "site-packages/calibre/customize/ui.py", line 427, in get_file_type_metadata


 "site-packages/calibre/customize/builtins.py", line 284, in get_metadata


 "site-packages/calibre/ebooks/metadata/mobi.py", line 494, in get_metadata


 "site-packages/calibre/ebooks/mobi/reader/headers.py", line 284, in __init__


 "site-packages/calibre/ebooks/mobi/reader/headers.py", line 312, in identity
MobiError: Unknown book type: ??????

Traceback (most recent call last):

 "./install.py", line 32, in <module>
Main()

 "./install.py", line 21, in Main
subprocess.check_call( [ python_binary, build_file ] + sys.argv[1:] )

 "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 540, in check_call
raise CalledProcessError(retcode, cmd)subprocess.CalledProcessError: Command '['/usr/bin/python', '/Users/alex/.vim/bundle/YouCompleteMe/third_party/ycmd/build.py', '--clang-completer', '--gocode-completer', '--system-libclang']' returned non-zero exit status 1