I keep on getting this error when starting at the very first choice after naming the MC. It's for Season 1/2.
```
I'm sorry, but an uncaught exception occurred.
While running game code:
File "game/script.rpy", line 171, in script
File "game/header.rpy", line 281, in menu_override
File "game/header.rpy", line 282, in <lambda>
KeyError: u'mod_gr'
-- Full Traceback ------------------------------------------------------------
Full traceback:
File "game/script.rpy", line 171, in script
File "renpy/ast.py", line 1903, in execute
File "game/header.rpy", line 281, in menu_override
File "game/header.rpy", line 282, in <lambda>
File "renpy/exports.py", line 3688, in substitute
File "renpy/substitutions.py", line 278, in substitute
File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/string.py", line 563, in vformat
File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/string.py", line 585, in _vformat
File "renpy/substitutions.py", line 168, in get_field
File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/string.py", line 646, in get_field
File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/string.py", line 605, in get_value
KeyError: u'mod_gr'
```
It keeps on happening after during choices too.