------------- Error -------------
Failed to load mod "filter-combinator-improved": ...ter-combinator-improved__/framework/prototypes/style.lua:7: attempt to index field 'gui-style' (a nil value)
stack traceback:
...ter-combinator-improved__/framework/prototypes/style.lua:7: in main chunk
[C]: in function 'require'
filter-combinator-improved/framework/prototype.lua:6: in main chunk
[C]: in function 'require'
filter-combinator-improved/framework/init.lua:90: in function 'init'
filter-combinator-improved/lib/init.lua:8: in main chunk
[C]: in function 'require'
filter-combinator-improved/settings.lua:1: in main chunk

Thanks for reporting. Looking into it. What other mods do you have loaded?

I have quite a lot of mods, it was late and I skipped troubleshooting, and went to bed after posting a bug note. In the next message is the entire Mod List. If you want I can also give a DNS address for direct access to the server to view the mods.

"mods":
base, 4_Way_Underground_Pipe, AccumulatorFarm, Aircraft, alien-biomes, alien-biomes-hr-terrain, alterae_chunk-power, armor-spill-prevention, ArmouredBiters, artillery-spidertron, assault_spidertron, beatrix, beltlayer, BeltLiner, better-train-system, better-victory-screen, BetterRoboport, bigger-artillery, Big_Brother, bobinserters, boblibrary, bot-batteries-technologies, botsbotsbots, BotSpeed, CaramelldansenLabs, CharacterModHelper, circuit_visualizer, CleanFloor, combat-mechanics-overhaul, Configurable-Armour-Suits, Constructron-Continued, control-your-rods, CopyPasteModules, Custom_Production_UI, cybersyn, cybersyn-combinator, Dectorio, deep-underground-belt, DiscoScience, DoingThingsByHand, DoubleSpeedBelts, endless_resources, equipment-gantry, even-distribution, expandtooltip, extended-descriptions, factorio-USA-pumpjacks, flib, FluidMustFlow, FNEI, glutenfree-equipment-train-stop, grappling-gun, heroic_library, hunter-killer, ick-automatic-train-repair, informatron, jetpack, Long_Range_Delivery_Drones, LouderCargoWagons, MaxRateCalculator, maxwell-starting-bots, miku-bikini-swimsuit, Milestones, miniloader, minime, More_Roboports_SE, NewGirlCharacter, NewGirlCharacterHR, pushbutton, QueueToFrontNG, rail-decon-planner, RailSignalPlanner, reactors-warm-up-faster-so-you-don_t-have-to-wait, reconnect-cut-wires, reverse-factory, robot_attrition, rp_artillery_turret_1_art, rp_art_util, shield-projector, show-missing-bottles-for-current-research, simhelper, skys-infinite-modules, snip-light-artillery, SolarFarm, SolarRatio, space-exploration-graphics, spiderbots, spidertron-control-center, spidertron-extended, Spidertron-Inventory-Sorter, spidertron-logistics, SpidertronEnhancements, SpidertronPatrols, spidertrontiers-community-updates, Spider_Control, Squeak Through, stdlib, Subsurface, tarantulator, textplates, themightygugi_longreach, Timer-map_playtime, train-refuel-proxy, UltimateBelts, UltimateResearchQueue, universal-caramelldansen, Upgraded-Robots, vehicle-corpses, VehicleSnap, Waterfill_v17, WideChests, WideChestsLogistic, WideChestsUnlimited

I found the mod with the incompatiblilty it is skys-infinite-modules

Thanks for letting me know. I will test with that module.

this is the same bug that the fiber optics connect has. I will release a version that fixes it.

Experienced same error with version 2.1.1. I don't have skys-infinite-modules. Happy to list my mod set it if helps as a next step but I'll hold off for now so I can try to narrow down if there is a conflict with a specific mod I do have. Biggest mod/set I have is SE related.

Error txt from game logfile:
2.494 Error ModManager.cpp:1625: Failed to load mod "filter-combinator-improved": ...ter-combinator-improved__/framework/prototypes/style.lua:7: attempt to index field 'gui-style' (a nil value)
stack traceback:
...ter-combinator-improved__/framework/prototypes/style.lua:7: in main chunk
[C]: in function 'require'
filter-combinator-improved/framework/prototype.lua:6: in main chunk
[C]: in function 'require'
filter-combinator-improved/framework/init.lua:95: in function 'init'
filter-combinator-improved/lib/init.lua:8: in main chunk
[C]: in function 'require'
filter-combinator-improved/settings.lua:1: in main chunk
2.495 Loading mod core 0.0.0 (data.lua)
2.535 Checksum for core: 607699937
2.572 Error ModManager.cpp:1625: Error in assignID: recipe-category with name 'crafting' does not exist.