Ok good. It can be fixed given what you told me. When it crashes on Windows it will give an error message. Can you copy and paste this error message on here and I will fix it.
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ERROR in action number 1
of Draw Event for object oGame:
ds_map_find_value argument 1 incorrect type (undefined) expecting a ds_map
at gml_Script_game_gui_diplomacy_countries_powers
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gml_Script_game_gui_diplomacy_countries_powers (line -1)
gml_Script_game_gui_diplomacy_countries
gml_Script_game_gui_diplomacy
gml_Script_screens_gui
gml_Script_game_gui
gml_Object_oGame_Draw_64