Edit:
Completely deleted and reinstalled Stellaris and all mods. Activated just the STNC mod, not even UI mods. Problem persists.

Might be a graphics memory thing. I know there was a tonne of issues on Macs related to memory usage, and STNC has a lot of assets to load.

What error do you get in your equivalent of this folder?
C:\Users\[name]\Documents\Paradox Interactive\Stellaris\crashes\

I lowered the settings significantly, no change. My MBP has 16 GB combined memory, the same as my Intel MBP before and that worked well.

system log:
[17:41:40][gfx_opengl.cpp:3453]: Loading settings for adapter -1, fullscreen=1, multisample=15
[17:41:40][gfx_opengl.cpp:3524]: Checking for multi-sampling support:
[17:41:40][gfx_opengl.cpp:3550]: MaxTextureWidth: 16384
[17:41:40][gfx_opengl.cpp:3551]: MaxTextureHeight: 16384
[17:41:40][graphicssettings.cpp:168]: 2 samples supported.
[17:41:40][graphicssettings.cpp:168]: 4 samples supported.
[17:41:40][graphicssettings.cpp:204]: Support for Anisotropic filtering found.
[17:41:40][graphicssettings.cpp:208]: Max Anisotropic filtering supported: 16
[17:41:40][graphicssettings.cpp:209]: Anisotropic filtering set to: 16
[17:41:42][gfx_opengl.cpp:3453]: Loading settings for adapter -1, fullscreen=1, multisample=15
[17:41:42][gfx_opengl.cpp:3524]: Checking for multi-sampling support:
[17:41:42][gfx_opengl.cpp:3550]: MaxTextureWidth: 16384
[17:41:42][gfx_opengl.cpp:3551]: MaxTextureHeight: 16384
[17:41:42][graphicssettings.cpp:168]: 2 samples supported.
[17:41:42][graphicssettings.cpp:168]: 4 samples supported.
[17:41:42][graphicssettings.cpp:204]: Support for Anisotropic filtering found.
[17:41:42][graphicssettings.cpp:208]: Max Anisotropic filtering supported: 16
[17:41:42][graphicssettings.cpp:209]: Anisotropic filtering set to: 16
[17:41:42][graphicssettings.cpp:792]: Not using multisampling.
[17:41:42][pdx_audio_sdl.cpp:109]: [0] Audio device: MacBook Pro-Lautsprecher
[17:41:42][pdx_audio_sdl.cpp:116]: [0] Audio driver: coreaudio
[17:41:42][pdx_audio_sdl.cpp:116]: [1] Audio driver: disk
[17:41:42][pdx_audio_sdl.cpp:116]: [2] Audio driver: dummy
[17:41:42][pdx_audio_sdl.cpp:141]: Current audio driver: coreaudio
[17:41:42][pdx_audio_sdl.cpp:148]:
Frequency: 44100
Format: 32784
Channels: 2
Samples: 1024
[17:41:42][graphics.cpp:815]: Creating device with: HARDWARE_VERTEXPROCESSING
Fullscreen=yes
RefreshRate=120
Resolution=1920x1200
[17:41:43][gfx_opengl.cpp:1039]:
OpenGL Version: 2.1 Metal - 76.3
Supported Extensions:
GL_ARB_color_buffer_float
GL_ARB_depth_buffer_float
GL_ARB_depth_clamp
GL_ARB_depth_texture
GL_ARB_draw_buffers
GL_ARB_draw_elements_base_vertex
GL_ARB_draw_instanced
GL_ARB_fragment_program
GL_ARB_fragment_program_shadow
GL_ARB_fragment_shader
GL_ARB_framebuffer_object
GL_ARB_framebuffer_sRGB
GL_ARB_half_float_pixel
GL_ARB_half_float_vertex
GL_ARB_imaging
GL_ARB_instanced_arrays
GL_ARB_multisample
GL_ARB_multitexture
GL_ARB_occlusion_query
GL_ARB_pixel_buffer_object
GL_ARB_point_parameters
GL_ARB_point_sprite
GL_ARB_provoking_vertex
GL_ARB_seamless_cube_map
GL_ARB_shader_objects
GL_ARB_shader_texture_lod
GL_ARB_shading_language_100
GL_ARB_shadow
GL_ARB_shadow_ambient
GL_ARB_sync
GL_ARB_texture_border_clamp
GL_ARB_texture_compression
GL_ARB_texture_compression_rgtc
GL_ARB_texture_cube_map
GL_ARB_texture_env_add
GL_ARB_texture_env_combine
GL_ARB_texture_env_crossbar
GL_ARB_texture_env_dot3
GL_ARB_texture_float
GL_ARB_texture_mirrored_repeat
GL_ARB_texture_non_power_of_two
GL_ARB_texture_rectangle
GL_ARB_texture_rg
GL_ARB_transpose_matrix
GL_ARB_vertex_array_bgra
GL_ARB_vertex_blend
GL_ARB_vertex_buffer_object
GL_ARB_vertex_program
GL_ARB_vertex_shader
GL_ARB_window_pos
GL_EXT_abgr
GL_EXT_bgra
GL_EXT_bindable_uniform
GL_EXT_blend_color
GL_EXT_blend_equation_separate
GL_EXT_blend_func_separate
GL_EXT_blend_minmax
GL_EXT_blend_subtract
GL_EXT_clip_volume_hint
GL_EXT_debug_label
GL_EXT_debug_marker
GL_EXT_draw_buffers2
GL_EXT_draw_range_elements
GL_EXT_fog_coord
GL_EXT_framebuffer_blit
GL_EXT_framebuffer_multisample
GL_EXT_framebuffer_multisample_blit_scaled
GL_EXT_framebuffer_object
GL_EXT_framebuffer_sRGB
GL_EXT_geometry_shader4
GL_EXT_gpu_program_parameters
GL_EXT_gpu_shader4
GL_EXT_multi_draw_arrays
GL_EXT_packed_depth_stencil
GL_EXT_packed_float
GL_EXT_provoking_vertex
GL_EXT_rescale_normal
GL_EXT_secondary_color
GL_EXT_separate_specular_color
GL_EXT_shadow_funcs
GL_EXT_stencil_two_side
GL_EXT_stencil_wrap
GL_EXT_texture_array
GL_EXT_texture_compression_dxt1
GL_EXT_texture_compression_s3tc
GL_EXT_texture_env_add
GL_EXT_texture_filter_anisotropic
GL_EXT_texture_integer
GL_EXT_texture_lod_bias
GL_EXT_texture_rectangle
GL_EXT_texture_shared_exponent
GL_EXT_texture_sRGB
GL_EXT_texture_sRGB_decode
GL_EXT_timer_query
GL_EXT_transform_feedback
GL_EXT_vertex_array_bgra
GL_APPLE_aux_depth_stencil
GL_APPLE_client_storage
GL_APPLE_element_array
GL_APPLE_fence
GL_APPLE_float_pixels
GL_APPLE_flush_buffer_range
GL_APPLE_flush_render
GL_APPLE_packed_pixels
GL_APPLE_pixel_buffer
GL_APPLE_rgb_422
GL_APPLE_row_bytes
GL_APPLE_specular_vector
GL_APPLE_texture_range
GL_APPLE_transform_hint
GL_APPLE_vertex_array_object
GL_APPLE_vertex_point_size
GL_APPLE_vertex_program_evaluators
GL_APPLE_ycbcr_422
GL_ATI_separate_stencil
GL_ATI_texture_env_combine3
GL_ATI_texture_float
GL_IBM_rasterpos_clip
GL_NV_blend_square
GL_NV_conditional_render
GL_NV_depth_clamp
GL_NV_fog_distance
GL_NV_fragment_program_option
GL_NV_fragment_program2
GL_NV_light_max_exponent
GL_NV_texgen_reflection
GL_NV_texture_barrier
GL_NV_vertex_program2_option
GL_NV_vertex_program3
GL_SGI_color_matrix
GL_SGIS_generate_mipmap
GL_SGIS_texture_edge_clamp
GL_SGIS_texture_lod

[17:41:43][graphicssettings.cpp:748]: Usable res: 3024 1964 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 3024 1964 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 3024 1964 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 3024 1964 48
[17:41:43][graphicssettings.cpp:748]: Usable res: 3024 1890 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 3024 1890 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 3024 1890 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 3024 1890 48
[17:41:43][graphicssettings.cpp:748]: Usable res: 2704 1756 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 2704 1756 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 2704 1756 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 2704 1756 48
[17:41:43][graphicssettings.cpp:748]: Usable res: 2704 1690 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 2704 1690 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 2704 1690 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 2704 1690 48
[17:41:43][graphicssettings.cpp:748]: Usable res: 2560 1600 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 2560 1600 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 2560 1600 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 2560 1600 48
[17:41:43][graphicssettings.cpp:748]: Usable res: 2294 1490 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 2294 1490 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 2294 1490 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 2294 1490 48
[17:41:43][graphicssettings.cpp:748]: Usable res: 2294 1432 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 2294 1432 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 2294 1432 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 2294 1432 48
[17:41:43][graphicssettings.cpp:748]: Usable res: 2048 1330 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 2048 1330 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 2048 1330 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 2048 1330 48
[17:41:43][graphicssettings.cpp:748]: Usable res: 2048 1280 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 2048 1280 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 2048 1280 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 2048 1280 48
[17:41:43][graphicssettings.cpp:748]: Usable res: 1920 1200 120
[17:41:43][graphicssettings.cpp:748]: Usable res: 1920 1200 60
[17:41:43][graphicssettings.cpp:748]: Usable res: 1920 1200 50
[17:41:43][graphicssettings.cpp:748]: Usable res: 1920 1200 48
[17:41:43][graphics.cpp:851]: Done creating device.

Exception.txt:
Application: Stellaris
Version: 3.2.2
Date/Time: 2022-02-17 17:42:34

Caught signal 10 (SIGBUS)

Not sure what that Exception means... I'll ask around to find out. :)

Thanks! I reverted back to Stellaris 3.1 and 3.0, no change here as well.

I'm told that exception relates to memory access problems. Maybe something about not being able to sign graphics memory?

I have no idea honestly. It's weird since every single other mod I'm using doesn't lead to this error. And I believe I used STNC before, I just don't remember if it was on this new Mac or on my old Intel MBP (sold it). I have the MBA from my wife, I can try it on that machine and report back.

Same issue here. My M1 Pro Max was working perfectly 2 months ago when launching new game. need to revert to old saved initial starts to play the game.

Pretty sure its not a resource thing because in my saved games I have the largest map open with max civilizations and maxed out graphics. The M1 does this with no effort at all, while I swipe between desktops (xCode compiling in other windows)

So is it crashing when creating a new game, or when loading to the menu?

Its the same here. Using a MBP IntelProcessor i7 16MB combined. My old save games work very well with the changes from 3.2.2. (even the lore rich galaxy graphic settings maxed out) but if I try to start a new game the bar does no go above 25% and soon after stellaris crashes

I am having the same issue with my m1 pro but i have never made a save with this mod so i just cant play. (game crashes when i try to load a game after it reaches 25%)

While I try and get some better debugging... if you guys want to join the Discord I'm sure we'll be happy to provide some Day 0 save games that should bypass the issue with new games.

Hey everyone, I'm having the same issue as well on my iMac.

@walshicus, checked again today. Still crashing. It crashes on the loading splash screen before you are presented with the game play UI (galaxy), and after you have selected your race and launched. ~ 10-25% through loading, fatal error crash, brings all of the game down.

This behavior does not occur with vanilla stellaris.