/home/ian/Documents/gamedev/isometric-city-generator-ruby/assets.rb:39:in initialize': undefined method to_blob' for #<Game:0x000000025c3c38 @__swigtype__="_p_Gosu__Window"> (NoMethodError)
  from /home/ian/Documents/gamedev/isometric-city-generator-ruby/assets.rb:39:in initialize'
  from /home/ian/Documents/gamedev/isometric-city-generator-ruby/assets.rb:39:in new'
  from /home/ian/Documents/gamedev/isometric-city-generator-ruby/assets.rb:39:in block (2 levels) in load_assets'
  from /home/ian/Documents/gamedev/isometric-city-generator-ruby/assets.rb:29:in each'
  from /home/ian/Documents/gamedev/isometric-city-generator-ruby/assets.rb:29:in block in load_assets'
  from /home/ian/Documents/gamedev/isometric-city-generator-ruby/assets.rb:26:in each'
  from /home/ian/Documents/gamedev/isometric-city-generator-ruby/assets.rb:26:in load_assets'
  from ./game.rb:23:in initialize'
  from ./game.rb:113:in new'
  from ./game.rb:113:in <main>'


Code: assets.rb @ 39

Just reinstalled gosu on a new machine and I get this error when I try to run my Isometric City Generator. I haven't updated it in 8 months or so, was there any updates changing how Gosu::Image works? The error occurs when calling Gosu::Image.new.

2.2.1 :001 > require 'gosu'
=> true
2.2.1 :002 > Gosu::Image
=> Gosu::Image
2.2.1 :003 > window = Gosu::Window.new(400, 400, false)
=> #<Gosu::Window:0x00000001252708 @__swigtype__="_p_Gosu__Window">
2.2.1 :004 > image = Gosu::Image.new(window, "./block.png")
NoMethodError: undefined method to_blob' for #<Gosu::Window:0x00000001252708 @__swigtype__="_p_Gosu__Window">
  from (irb):4:in initialize'
  from (irb):4:in initialize'
  from (irb):4:in new'
  from (irb):4
  from /home/ian/.rvm/rubies/ruby-2.2.1/bin/irb:11:in <main>'
2.2.1 :005 > image = Gosu::Image.new(window, "block.png")
NoMethodError: undefined method to_blob' for #<Gosu::Window:0x00000001252708 @__swigtype__="_p_Gosu__Window">
  from (irb):5:in initialize'
  from (irb):5:in initialize'
  from (irb):5:in new'
  from (irb):5
  from /home/ian/.rvm/rubies/ruby-2.2.1/bin/irb:11:in <main>'
2.2.1 :006 > image = Gosu::Image.new(window, "./block.png")
NoMethodError: undefined method to_blob' for #<Gosu::Window:0x00000001252708 @__swigtype__="_p_Gosu__Window">
  from (irb):6:in initialize'
  from (irb):6:in initialize'
  from (irb):6:in new'
  from (irb):6
  from /home/ian/.rvm/rubies/ruby-2.2.1/bin/irb:11:in `<main>'
2.2.1 :007 >