When I check the "World: Enable new enemies" option in the configuration (no other changes to any default settings) and restart to apply changes, I get an error during sprite loading during startup. After this I have to manually delete the mod-settings.dat file in order to recover the default settings and allow Rampant to load again.
Logs:
14.480 Crop bitmaps.
14.526 Parallel Sprite Loader initialized (threads: 3)
14.548 Error AtlasSystem.cpp:1405: The given sprite rectangle (left_top=0x0, right_bottom=64x64) is outside the actual sprite size (left_top=0x0, right_bottom=32x32).
If this is being used as an icon you may need to define the icon_size property.: Rampant/graphics/icons/thief/crystal-drain.png
14.662 Initial atlas bitmap size is 16384
14.663 Created atlas bitmap 2048x1008 [icon, not-compressed, mipmap, linear-minification, linear-magnification, linear-mip-level]
14.663 Created virtual atlas pages 4096x4096x0
14.669 Texture processor created (2048). GPU accelerated compression Supported: yes, Enabled: yes/yes. Test passed. YCoCgDXT PSNR: 35.83, BC3 PSNR: 33.82
14.683 Parallel Sprite Loader initialized (threads: 3)
14.720 Sprites loaded
14.732 Generated mipmaps (5) for atlas [0] of size 2048x1008
14.732 Custom mipmaps uploaded.
14.738 Custom inputs active: 33
14.742 Factorio initialised
14.750 Mods to disable:Failed to load mods: The given sprite rectangle (left_top=0x0, right_bottom=64x64) is outside the actual sprite size (left_top=0x0, right_bottom=32x32).
If this is being used as an icon you may need to define the icon_size property.: Rampant/graphics/icons/thief/crystal-drain.png