nmlc ERROR: nmlc: An internal error has occurred: nmlc-version: v6133M:5ec05bde6098 from 2016-10-16 Error: (TypeError) "Can't convert 'int' object to str implicitly". Command: ['../../tools/nml/nmlc', '--lang-dir=lang', 'generated/firs.nml'] Location: File "/Users/andy/Documents/OTTD_graphics/tools/nml/nml/grfstrings.py", line 645, in parse_string