I cannot save any files after lookups are complete: https://snag.gy/2AvuLc.jpg

I get this error on EVERY save: "error: invalid literal for int() with base 10"

From the log:
E: 11:04:53 Traceback (most recent call last):
File "picard/util/thread.pyo", line 46, in run
File "picard/file.pyo", line 180, in _save_and_rename
File "picard/file.pyo", line 313, in _rename
File "picard/file.pyo", line 288, in _make_filename
File "picard/file.pyo", line 258, in _script_to_filename
File "picard/script.pyo", line 281, in eval
File "picard/script.pyo", line 119, in eval
File "picard/script.pyo", line 111, in eval
File "picard/script.pyo", line 313, in func_if
File "picard/script.pyo", line 119, in eval
File "picard/script.pyo", line 111, in eval
File "picard/script.pyo", line 392, in func_num
ValueError: invalid literal for int() with base 10: '2 - '