Full error message:
Error loading mods
Failed to load mods: Error while running setup for entity prototype "underground-belt-beltlayer-connector" (loader-1x1): next_upgrade target (fast-underground-belt) must have the same collision mask.
Mods to be disabled:
beltlayer (2.0.4)
combat-mechanics-overhaul (0.6.20)
Isolation steps:
Disabled all mods, except Beltlayer.
Renabled one by one with Beltlayer enabled.
Result:
Mods fail to load once Space Exploration Space Exploration + required extras enabled.
Further isolation shows it is the Space Exploration (0.5.103) mod alone causing the issue.
/space-exploration]$ grep -rnwi . -e "fast-underground-belt"
./prototypes/phase-3/ruin-remnants.lua:66: "fast-underground-belt-remnants",
./prototypes/phase-multi/item-group-assign.lua:53:change_subgroup("fast-underground-belt", "underground-belt")
./locale/ko/strings.cfg:788:fast-underground-belt=아이템을 지하로 운송하기 위한 컨베이어 벨트입니다.
./locale/pl/strings.cfg:769:fast-underground-belt=A conveyor that moves items underground.
./locale/ja/strings.cfg:424:fast-underground-belt=地下を通してアイテムを運びます。より高速で、多くのアイテムを運ぶことができます。
./locale/ru/strings.cfg:1098:fast-underground-belt=Конвейер, перемещающий предметы под землёй.
./locale/zh-CN/strings.cfg:971:fast-underground-belt=一种可以在地下运送物品的传送带
./locale/cs/strings.cfg:614:fast-underground-belt=Dopravník transportující předměty pod zemí.
./locale/en/strings.cfg:991:fast-underground-belt=A conveyor that moves items underground.
./locale/de/strings.cfg:1048:fast-underground-belt=Ein Förderband, das Gegenstände unter der Erde bewegt.
./locale/tr/strings.cfg:1096:fast-underground-belt=Öğelleri yer altından taşıyan bir taşıyıcı.
./locale/es-ES/strings.cfg:1096:fast-underground-belt=Un transportador subterráneo que mueve artículos.
./locale/fr/strings.cfg:985:fast-underground-belt=Un convoyeur qui déplace les objets sous terre.
./locale/pt-BR/strings.cfg:983:fast-underground-belt=Uma esteira que movimenta itens no subsolo.
Modlist:
AAI Industry (0.5.11)
AAI Signal Transmission (0.4.4)
Afraid Of The Dark (1.1.1.)
Alien Biomes (0.6.5)
Automatic Train Painter (1.1.4)
Base mod (1.1.53)
Beltlayer (2.0.4)
Better Energy production (0.2.2)
Bigger Artillery (0.5.3)
Bob's Adjustable Inserters mod (1.1.0)
Bottleneck Lite (1.2.3)
Cargo Ships (0.1.13)
Cargo Ships Graphics (0.1.0)
Combat Mechanics Overhaul (0.6.20)
Editor Extensions (1.12.6)
Electric Trains (1.3.1)
Epic Artillery Sounds (1.1.1)
Even Distribution (1.0.10)
Factorio Library (0.9.2)
Hydro Electric Power (1.0.0)
Infinizoom (0.1.9)
InformaTron (0.2.2)
Jetpack (0.2.13)
Krastorio 2 (1.2.20)
Krastorio 2 Assets (1.1.0)
Landfill plus (1.0.17)
Miniloader (1.14.8)
NiceFill (0.1.19)
Noxys Waterfill (0.4.2)
Robot Attrition (0.5.12)
Shield Projector (0.1.3)
Space Exploration (0.5.103)
Space Exploration Graphics Part 1 (0.5.14)
Space Exploration Graphics Part 2 (0.1.1)
Space Exploration Graphics Part 3 (0.1.1)
Space Exploration Graphics Part 4 (0.1.1)
Space Exploration Graphics Part 5 (0.1.2)
Space Exploration Post Process (Required) (0.5.27)
Squeak Through (1.8.2)
Train Supply Manager (1.1.7)
Walls Block Spitters (0.6.2)
Love this mod, by the way. Fantastic. Only recently trying Space Exploration after a year long break.