The mod Dynamic Programmable Train Stop Naming (1.0.5) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event dynamic-programmable-train-stop-naming::on_entity_settings_pasted (ID 39)
dynamic-programmable-train-stop-naming/control.lua:46: attempt to index local 'source_settings' (a nil value)
stack traceback:
dynamic-programmable-train-stop-naming/control.lua:46: in function <dynamic-programmable-train-stop-naming/control.lua:40>

I'm not able to reproduce this on a new SE save, what where the steps you did to cause the crash? I've tried simply copy pasting settings with and without the source station existing and everything seems fine.

I just shift+right click on any station and shift+right click to new station .. I do have a lot of other mods installed , so maybe some other mod is causing the error

do you have logistic train network installed? i could see that maybe causing issues but a full mod list would really help

It is a looooong list :D

Elevated rails
7 Segment Digits
AAI Containers & Warehouses
AAI Industry
AAI Signal Transmission
Advanced Solar High Resolution
Alien Biomes
Alien Biomes Grapgics
Auto Ghost Builder
Belt Glow
Better Train System
Blueprint Sandboxes
Buggis Nuclear Bots
Bullet Trails
Combat Mechanics Overhaul
Configurable Beacons
Easy Roboports
Factorio Library
Factory Search
Filter Combinator
Fundryu
Incenerator
InformaTron
Inserter Throughput
Iper Belt
Item Inserter
Jetpack
Loaders Modernized
Loaders Modernized: Iper Belt
Long-Handed Bulk Inserters
Max Rate Calculator
Memory Storage SE [Fixed]
Nice Try, Train
One More Tier
Power Armor MK3
Productions Per Minute
Quality (SE-Compatyble fork)
Rail Signal Planner
Rate Calculator
Recipe Book
Resource Patch Organizer
Robot Attrition
Robot Recall V2
Rocket Log
Shield Prohector
Show Max Underground Distance
Simple Speed Control
Simply Power Armor MK3
Skewer's Deep Mining Drill Standalone
Space Exploration
Space Exploration - core miner output helper
Space Exploration - Jetpack Gui
Space Exploration - Scripts
Space Exploration - Tinted Pyramides
Space Exploration - Unioverse explorer highlight zpnes new to you
Space Exploration - Graphics PArt 1-5
Space Exploration - Menu Simulations
Space Exploration - Postprocess
Space Exploration - Stack Inserters
Stop Chasing Belt Items
Text Plates
Void Chest +
Water Poles
WaterExtractor

Ok I was able to reproduce this after a bit and was able to fix it and some other bugs, what was happening was that the mod was trying to read settings that didnt exist yet because they where only created when the station ui was opened.