bilby_convert_resume error

The bilby_convert_resume command line tool throws an error after recent changes to checkpointing. The error traceback is;

File "/Users/nsarin/anaconda3/bin/bilby_convert_resume", line 11, in <module>
    load_entry_point('bilby', 'console_scripts', 'bilby_convert_resume')()
  File "/Users/nsarin/Documents/PhD/bilby/cli_bilby/resume.py", line 98, in main
    convert_resume(resume_file, args)
  File "/Users/nsarin/Documents/PhD/bilby/cli_bilby/resume.py", line 88, in convert_resume
    df = read_in_pickle_file(resume_file)
  File "/Users/nsarin/Documents/PhD/bilby/cli_bilby/resume.py", line 54, in read_in_pickle_file
    if "posterior" in data:
TypeError: argument of type 'MultiEllipsoidSampler' is not iterable