When I put the pipe from Space Exploration, more precisely "steel underground pipe". Crashes the game and gives me this error.

Realistic Fusion Power (1.7.4) mod caused an unrecoverable error. Please report this error to the author of the mod.

Error while running event RealisticFusionPower::on_tick (ID 0)
invalid key to 'next'
stack traceback:
[C]: in function 'next'
RealisticFusionPower/control.lua:42: in function
<RealisticFusionPower/control.lua:38>

Can't interact with all the pipes

I'm not getting the error, can you send me your entire mod list?

Informatron, Jetpack, Todo List, AAI Containers & Warehouses, AAI Industry, AAI Signal Transmission, AAI Signals, AAI Vehicles: Chaingunner, Aircraft, Alien Biomes, Alien Biomes High-Res Terrain, Auto Deconstruct, Automatic logistic chests, Blueprint Flip and Turn, Bottleneck, Change Map Settings, Clock, Companion Drones, Crafting Speed Research, Deadlock's Stacking Beltboxes & Compact Loaders, Delete Empty Chunks, EvoGUI - Evolution Factor Indicator and more, Factorio Library, Factorio Standard Library, Factory Planner, Flow Control, Fluid Must Flow, Fluid Must Flow for Space Exploration, FNEI, Fully Automated Rail Layer, Grappling Gun, Helmod: assistant for planning your base., Hiladdar's Belts, Hiladdar's Core, Hiladdar's Electrical, Hiladdar's Fuels, Hiladdar's Manufacturing, Hiladdar's Research, Hiladdar's Robots, Hiladdar's Scrubbers, Hiladdar's Trains, Hovercrafts, InfiniteInventory,
Infinizoom, Invincible Construction Bots, Krastorio 2, Krastorio 2 Rocket Fuel in Advanced Chemical Plant, Krastorio2 Bio Lab Modules, Krastorio2 Exoskeleton Boost, Krastorio2 Extended Endgame, LTN - Logistic Train Network, LTN Combinator for 0.18, 1.0 & 1.1, LTN Manager, Miniloader, Mining Drones, More Ammo, More Roboports, Realistic Fusion Power, Realistic Fusion Weaponry, Robot Attrition, Robot Battery Research, RPG, Scale Icons for Space Exploration, Shield Projector, Solar Calculator, Space Exploration, Space Exploration Extra Items, Space Exploration Graphics Part 1, Space Exploration Graphics Part 2, Space Exploration Graphics Part 3, Space Exploration Graphics Part 4, Space Exploration Graphics Part 5, Space Exploration HR Graphics (Optional Obsolete), Space Exploration Postprocess (Required), Space Exploration Recycling Extras, Space Solar Panel, Spidertron Extended, Squeak Through, Text Plates, Transport Drones.

I think that's it :D

Informatron, Jetpack, Todo List, AAI Containers & Warehouses, AAI Industry, AAI Signal Transmission, AAI Signals, AAI Vehicles: Chaingunner, Aircraft, Alien Biomes, Alien Biomes High-Res Terrain, Auto Deconstruct, Automatic logistic chests, Blueprint Flip and Turn, Bottleneck, Change Map Settings, Clock, Companion Drones, Crafting Speed Research, Deadlock's Stacking Beltboxes & Compact Loaders, Delete Empty Chunks, EvoGUI - Evolution Factor Indicator and more, Factorio Library, Factorio Standard Library, Factory Planner, Flow Control, Fluid Must Flow, Fluid Must Flow for Space Exploration, FNEI, Fully Automated Rail Layer, Grappling Gun, Helmod: assistant for planning your base., Hiladdar's Belts, Hiladdar's Core, Hiladdar's Electrical, Hiladdar's Fuels, Hiladdar's Manufacturing, Hiladdar's Research, Hiladdar's Robots, Hiladdar's Scrubbers, Hiladdar's Trains, Hovercrafts, InfiniteInventory, Infinizoom, Invincible Construction Bots, Krastorio 2, Krastorio 2 Rocket Fuel in Advanced Chemical Plant, Krastorio2 Bio Lab Modules, Krastorio2 Exoskeleton Boost, Krastorio2 Extended Endgame, LTN - Logistic Train Network, LTN Combinator for 0.18, 1.0 & 1.1, LTN Manager, Miniloader, Mining Drones, More Ammo, More Roboports, Realistic Fusion Power, Realistic Fusion Weaponry, Robot Attrition, Robot Battery Research, RPG, Scale Icons for Space Exploration, Shield Projector, Solar Calculator, Space Exploration, Space Exploration Extra Items, Space Exploration Graphics Part 1, Space Exploration Graphics Part 2, Space Exploration Graphics Part 3, Space Exploration Graphics Part 4, Space Exploration Graphics Part 5, Space Exploration HR Graphics (Optional Obsolete), Space Exploration Postprocess (Required), Space Exploration Recycling Extras, Space Solar Panel, Spidertron Extended, Squeak Through, Text Plates, Transport Drones.

I think that's it :D

Still can't reproduce the error. Did you change any of the mod settings? If so, can you send me your mod-settings.dat? It should be in your mods folder.

No, I didn't change anything, I just put it in. I can record a video about the crash.

I don't know if that'd help. Are you starting a new save or adding RFP to an existing one?

Already in existence. I can create a new world and test it this way

Try to do that, and send me the save file if you can.

Hmm... There's no such thing in the new world, man, and I don't really want to start a new game :D

Use Editor Extensions to test it.

I can send you a save of my main map and there maybe you will understand what the problem is. How about this?

I can send you a save of my main map and there maybe you will understand what the problem is. How about this?

Yeah, that could also work.

Then, how do I send a save?

It should be in the /saves folder inside Factorio's appdata.

How do I send it to you? Here, or is there some other way?

https://drive.google.com/file/d/1t_iJWYCQSKUiFUJs85QqAScmzGpeQvWK/view?usp=sharing

I'm sorry if I'm distracting you.

You aren't, it's my own mod that I'm trying to fix after all.

Fixed in 1.7.6.