Great plugin! Just one thing, I was having trouble getting the plugin to work on OSX. As it turns out, the plugin was trying to save to /KSP_osx/KSP.app/isa_RAM_Mapper instead of /KSP_osx/isa_RAM_Mapper (apps are folders in OSX). I\'ve got it to work by copying the isa_RAM_Mapper folder to the .app, but you probably need to handle an 'IsolatedStorageException' in the try-catch loop around line 176. Maybe add a boolean, if the exception throws and the boolean is false, set it to true and prepend a '../' to the kspDir variable and try to write again, if the boolean is already true then throw a message saying to make sure that you\'ve put the folder in the right place, then change the kspDir back to normal. Something like that. (My experience with C# is very minimal.) EDIT: The exact error was: IsolatedStorageException: Could not find a part of the path '/Users/myusername/Downloads/KSP_osx/KSP.app/isa_RAM_Mapper/isa_RAM_Mun_Data.csv'. Also, any chance I could help you test the mac version of the mapper?