Use UNREN and NOTEPAD++
Open the following .rpy files:
game/dynamic_open_world/dowi.rpy
game/mc_profile/
game/melissa_script/date/melissa_date.rpy
game/quests/quests.rpy
game/sofia_script/sofia_meeting.rpy
game/system/system_misc.rpy
Use the Replace function. In the find/replace boxes put spaces before and after. So use " rs " instead of "rs" this way it wont change other words like "cars" or other variables like "rschat".
In my case, I had it find " rs " and replace with " rosa "
Then click the Replace All in All Opened Documents.
Now delete the .rpyc files of the same names. Game will rebuild them with the new edits when you start the game.
NOTE: I haven't played last few updates. Last was .91/92 so there maybe more files added to be changed. You can open all the .rpy files into Notepad++ and check or wait until you get another sayer error.