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ive narrowed it down to a layer in the paint room doing it but im not sure which one. 

tried past file on current stable build and problem is not happening.... so im more confused. the past file works fine the current reconstructed model file breaks the icon gen.  so something specific about this file or model is the problem even though reconstructed from exports.  im baffled ill try sharing my file  

so i did some trouble shooting this am. alot of it. rolled back to earlier stable. tried with same file and tried with no file. whenever i DID NOT have a file for painting loaded in the paint room it worked fine. when i HAD a file loaded in the paint room i got this totally transparent icon or error. so i reconstructed the file from its exports, an obj and its exported textures. with the reconstructed file open i got the error in icon gen. so with any file or paint objects and textures loaded in the paint room this error is visible when remaking the icons. in either version of 3d coat today when i had nothing loaded in paint room the icon gen was correct.  in simpler terms  with clean reconstructed objects and textures loaded in paint room icon gen failed with no objects in paint room icon gen was successful.  this is strange i do not know what this means. thanks again for help here. troubleshooting these issues are difficult especially when we dont know what variable are at work here. next i will test on another prev made file and see if that one works or fails for consistency.  3dcoatMatPackedWithIconError.3dcpack

Yeah, you can see the new layer thumbnails and Photoshop style (and compatible) Layer/Clipping Masks here in this video:  

It’s amazing that they are improving the user experience with these updates! Most of the new features related to the layers system are already here. I have 3DCoat 2024, but not the latest version. Two months ago, they released updates for 3DCoat Textura, and the layers system there is quite similar to the one I’m using, but this update seems to be very recent. It's great, thanks so much for pointing me to this update. I'm sure they'll continue making improvements in this area

Thank you for taking the time to specify what you think can be improved. It's far more helpful and constructive than just repeating what you may have heard someone else say...ie, "The UI sucks." IMHO, it doesn't suck, but still has plenty of room for improvement. I don't disagree with much of what you suggested, but the comparison images you use are a bit outdated because we got image thumbnails on each layer + Photoshop style layer mask thumbnails in 3DCoat 2024. I do disagree a little bit regarding the layer grouping. In my opinion, it is noticeably/visually different from individual layers the same way PS group layers are. It's offset to the right, labeled specifically GROUP X, and has an arrow to the left of that text indicating that it is currently collapsed. Some others will also disagree about text vs icons. In 3DCoat, I think there is a good blend of both and you can choose to have all icons in the tool panel. Therefore, I am not personally in favor of cluttering the UI with more icons. We all have different preferences on that topic.

please share by pm the model parts with baking issues to take a look

I saw that video it didn't help in my case, only split UV set worked.

You have to assign them to a different UV set    Also modify Snapping method could help   On Paint room, also explode the model for AO & Curvature baking 

This game has no executable set. The install process didn't finish properly. Traceback (most recent call last):   File "/usr/lib/python3.12/site-packages/lutris/exception_backstops.py", line 29, in wrapper     result = function(*args, **kwargs)              ^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 672, in configure_game     gameplay_info = self.get_gameplay_info(launch_ui_delegate)                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 611, in get_gameplay_info     gameplay_info = self.runner.play()                     ^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/runners/wine.py", line 1223, in play     raise MissingGameExecutableError(filename=game_exe) lutris.exceptions.MissingGameExecutableError: This game has no executable set. The install process didn't finish properly. Lutris log: [INFO:2024-12-20 14:27:35,174:application]: Starting Lutris 0.5.18 [INFO:2024-12-20 14:27:35,175:schema]: Migrating games field sortname [INFO:2024-12-20 14:27:35,185:schema]: Migrating games field has_custom_coverart_big [INFO:2024-12-20 14:27:35,195:schema]: Migrating games field discord_id [INFO:2024-12-20 14:27:35,219:__init__]: Running migration: retrieve_discord_appids [INFO:2024-12-20 14:27:35,220:retrieve_discord_appids]: Updating Games Discord APP ID's [INFO:2024-12-20 14:27:35,693:__init__]: Running migration: migrate_sortname [INFO:2024-12-20 14:27:35,702:migrate_sortname]: Adding blank sortname field to database [INFO:2024-12-20 14:27:36,100:migrate_sortname]: Added blank sortname for Quixel Mixer [INFO:2024-12-20 14:27:36,100:__init__]: Running migration: migrate_hidden_category [INFO:2024-12-20 14:27:36,101:migrate_hidden_category]: Moving hidden games to the '.hidden' category [INFO:2024-12-20 14:27:36,348:startup]: "card0" is NVIDIA GeForce RTX 3090 (10de:2204 1043:87b3 nvidia) Driver 565.77 [WARNING:2024-12-20 14:27:36,573:game]: No path found in LutrisConfig(level=game, game_config_id=quixel-mixer-1653440917, runner=wine) [WARNING:2024-12-20 14:27:37,722:system]: Non existent path: /home/nathan/.local/share/lutris/runtime/umu [WARNING:2024-12-20 14:27:39,473:system]: Non existent path: /home/nathan/.local/share/lutris/runtime/umu-games [WARNING:2024-12-20 14:27:45,471:system]: Non existent path: /home/nathan/.local/share/lutris/runtime/dxvk-cache-tool [WARNING:2024-12-20 14:28:47,244:system]: Non existent path: /home/nathan/.local/share/lutris/runners/proton/ge-proton [INFO:2024-12-20 14:28:58,947:application]: Starting Lutris 0.5.18 [INFO:2024-12-20 14:28:59,166:startup]: "card0" is NVIDIA GeForce RTX 3090 (10de:2204 1043:87b3 nvidia) Driver 565.77 [ERROR:2024-12-20 14:32:52,081:wine]: The game doesn't have an executable [ERROR:2024-12-20 14:32:52,085:exception_backstops]: Quixel Mixer (wine) has encountered an error: This game has no executable set. The install process didn't finish properly. Traceback (most recent call last):   File "/usr/lib/python3.12/site-packages/lutris/exception_backstops.py", line 29, in wrapper     result = function(*args, **kwargs)              ^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 672, in configure_game     gameplay_info = self.get_gameplay_info(launch_ui_delegate)                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 611, in get_gameplay_info     gameplay_info = self.runner.play()                     ^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/runners/wine.py", line 1223, in play     raise MissingGameExecutableError(filename=game_exe) lutris.exceptions.MissingGameExecutableError: This game has no executable set. The install process didn't finish properly. [WARNING:2024-12-20 14:32:52,085:game]: The game has run for a very short time, did it crash? [INFO:2024-12-20 14:34:03,814:files_box]: All files available [INFO:2024-12-20 14:34:03,814:installerwindow]: All files are available, continuing install [INFO:2024-12-20 14:34:03,817:installerwindow]: Launching installer commands [INFO:2024-12-20 14:34:03,914:wine]: Creating a win64 prefix in /home/nathan/Games/3dcoat-2024-31exe [INFO:2024-12-20 14:34:03,914:wine]: Winepath: /home/nathan/.local/share/lutris/runners/wine/wine-ge-8-26-x86_64/bin/wine [INFO:2024-12-20 14:34:12,885:wine]: win64 Prefix created in /home/nathan/Games/3dcoat-2024-31exe [WARNING:2024-12-20 14:34:12,932:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [WARNING:2024-12-20 14:34:12,937:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [ERROR:2024-12-20 14:36:27,579:game_finder]: Couldn't find a Windows executable in /home/nathan/Games/3dcoat-2024-31exe [ERROR:2024-12-20 14:36:27,621:jobs]: Error while completing task <bound method InstallerWindow.create_shortcut of <installerwindow.InstallerWindow object at 0x78df4a2197c0 (lutris+gui+installerwindow+InstallerWindow at 0x6480ccda9130)>>: <class 'FileNotFoundError'> [Errno 2] No such file or directory: '/home/nathan/.cache/lutris/net.lutris.3dcoat-2024-31exe-2.desktop' [WARNING:2024-12-20 14:36:27,675:game]: No path found in LutrisConfig(level=game, game_config_id=3dcoat-2024-31exe-setup-1734723387, runner=wine) [WARNING:2024-12-20 14:36:27,675:path_cache]: No path for 3DCoat-2024-31.exe (wine) [INFO:2024-12-20 14:36:37,846:application]: Starting Lutris 0.5.18 [INFO:2024-12-20 14:36:38,101:startup]: "card0" is NVIDIA GeForce RTX 3090 (10de:2204 1043:87b3 nvidia) Driver 565.77 [WARNING:2024-12-20 14:36:38,148:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [WARNING:2024-12-20 14:36:38,152:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [ERROR:2024-12-20 14:36:38,173:wine]: The game doesn't have an executable [ERROR:2024-12-20 14:36:38,177:exception_backstops]: 3DCoat-2024-31.exe (wine) has encountered an error: This game has no executable set. The install process didn't finish properly. Traceback (most recent call last):   File "/usr/lib/python3.12/site-packages/lutris/exception_backstops.py", line 29, in wrapper     result = function(*args, **kwargs)              ^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 672, in configure_game     gameplay_info = self.get_gameplay_info(launch_ui_delegate)                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 611, in get_gameplay_info     gameplay_info = self.runner.play()                     ^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/runners/wine.py", line 1223, in play     raise MissingGameExecutableError(filename=game_exe) lutris.exceptions.MissingGameExecutableError: This game has no executable set. The install process didn't finish properly. [WARNING:2024-12-20 14:36:38,178:game]: The game has run for a very short time, did it crash? [ERROR:2024-12-20 14:36:38,178:application]: Unable to launch game: This game has no executable set. The install process didn't finish properly. NoneType: None [INFO:2024-12-20 14:37:05,947:application]: Starting Lutris 0.5.18 [INFO:2024-12-20 14:37:06,167:startup]: "card0" is NVIDIA GeForce RTX 3090 (10de:2204 1043:87b3 nvidia) Driver 565.77 [WARNING:2024-12-20 14:37:06,209:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [WARNING:2024-12-20 14:37:06,213:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [ERROR:2024-12-20 14:37:06,234:wine]: The game doesn't have an executable [ERROR:2024-12-20 14:37:06,238:exception_backstops]: 3DCoat-2024-31.exe (wine) has encountered an error: This game has no executable set. The install process didn't finish properly. Traceback (most recent call last):   File "/usr/lib/python3.12/site-packages/lutris/exception_backstops.py", line 29, in wrapper     result = function(*args, **kwargs)              ^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 672, in configure_game     gameplay_info = self.get_gameplay_info(launch_ui_delegate)                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 611, in get_gameplay_info     gameplay_info = self.runner.play()                     ^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/runners/wine.py", line 1223, in play     raise MissingGameExecutableError(filename=game_exe) lutris.exceptions.MissingGameExecutableError: This game has no executable set. The install process didn't finish properly. [WARNING:2024-12-20 14:37:06,238:game]: The game has run for a very short time, did it crash? [ERROR:2024-12-20 14:37:06,238:application]: Unable to launch game: This game has no executable set. The install process didn't finish properly. NoneType: None [WARNING:2024-12-20 14:37:21,759:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [WARNING:2024-12-20 14:37:21,764:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [ERROR:2024-12-20 14:37:21,784:wine]: The game doesn't have an executable [ERROR:2024-12-20 14:37:21,789:exception_backstops]: 3DCoat-2024-31.exe (wine) has encountered an error: This game has no executable set. The install process didn't finish properly. Traceback (most recent call last):   File "/usr/lib/python3.12/site-packages/lutris/exception_backstops.py", line 29, in wrapper     result = function(*args, **kwargs)              ^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 672, in configure_game     gameplay_info = self.get_gameplay_info(launch_ui_delegate)                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 611, in get_gameplay_info     gameplay_info = self.runner.play()                     ^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/runners/wine.py", line 1223, in play     raise MissingGameExecutableError(filename=game_exe) lutris.exceptions.MissingGameExecutableError: This game has no executable set. The install process didn't finish properly. [WARNING:2024-12-20 14:37:21,789:game]: The game has run for a very short time, did it crash? [WARNING:2024-12-20 14:37:40,337:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [WARNING:2024-12-20 14:37:40,342:wine]: Wine Virtual Desktop can't be used with Wine-GE and Proton [ERROR:2024-12-20 14:37:40,369:wine]: The game doesn't have an executable [ERROR:2024-12-20 14:37:40,373:exception_backstops]: 3DCoat-2024-31.exe (wine) has encountered an error: This game has no executable set. The install process didn't finish properly. Traceback (most recent call last):   File "/usr/lib/python3.12/site-packages/lutris/exception_backstops.py", line 29, in wrapper     result = function(*args, **kwargs)              ^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 672, in configure_game     gameplay_info = self.get_gameplay_info(launch_ui_delegate)                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/game.py", line 611, in get_gameplay_info     gameplay_info = self.runner.play()                     ^^^^^^^^^^^^^^^^^^   File "/usr/lib/python3.12/site-packages/lutris/runners/wine.py", line 1223, in play     raise MissingGameExecutableError(filename=game_exe) lutris.exceptions.MissingGameExecutableError: This game has no executable set. The install process didn't finish properly. [WARNING:2024-12-20 14:37:40,373:game]: The game has run for a very short time, did it crash?   Lutris doesn't seem to work either.

I didn't have this issue in Painter, i have 10.1.2 steam version. I baked model without any extra steps. I have only one time scale high-poly issue because it need to be fbx not obj to keep right scale, one model - one uv set, with overlapped UV, that all. Some times Painter can have issues but i never fix it by changing UV set. I remember i split model by half and bake it, then re-import normal version, it's works, but not for 3DCoat because it make sew in the middle. Painter don't do it. I tried to move overlapped to another UV tile it's work but not for 3DCoat, because it think 3DCoat has lack support of UV tiles. I tried to make sure the symmetry direction is in right position, the point is Painter calculate map from left to right, so if i have original model in left side, and symmetry on the right Painter baking great, almost no issues (to be hones when i found out this i almost never have overlapped issues). My experience which i used for Painter didn't work for 3DCoat that was the problem, that's why it's taking so long for me. I first time change UV set to fix overlap issue, i never did this before for Painter.

this was a common solution for this issue on any app. will be nice to know how spainter solve it with 2 click, so we can improve 3DC

Thank. That was actually what i did. I moved all overlapped UV to separate UV set and bake it. Unfortunately it took me couple days to come up this decision, because i believed 3DCoat can bake overlapped maps it's i just did something wrong. I was wasting time to search a solution in wrong direction.

To handle overlapped UV when bake I move all of the stacked UVs but one to a new UVset    leave only one island of overlapped UVs in the UVset base. or create a new polygroup, move overlapped islands but one and bake selected only Hope this help

Also default sm preview icon are lost ? Could you please share one material to take a look ?  I cant replicate the issue...