I think I figured out the issue. The geothermal mod uses a modified rail signal in order to have a glowing entity (he said its the only way, i've been told its not). I know that I built one of the depot sections over a geothermal field. I can not locate that now because of having to disable, save ...

Thank you very much for the fix! And I will do attachments for logs from now on. If you are ever in the way of oregon usa, ill by you a beer, or whiskey, or dinner, etc :mrgreen:

Could you tell what corrupted the data structure? Right now I feel it was just something with my laptop since there do ...

even going back to Geothermal 1.0.80 is causing a major crash with factorio with this save. I found a save done at around 1000 hours that loads, IIRC that was the backup prior to installing LTN (I named it poorly, should have been "Map 103 pre LTN")

Edit: Nope that was the save I did to move it ...

Disabling Geothermal and it loads.

0.001 2018-09-12 10:20:24; Factorio 0.16.51 (build 36654, win64, steam)
0.001 Operating system: Windows 7 Service Pack 1
0.001 Program arguments: "C:\Program Files (x86)\Steam\steamapps\common\Factorio\bin\x64\Factorio.exe" "--wait-to-close" "10448"
0.001 ...

Disabling all mod except LTN, it loads, gives the lists of things disabled/removed, then throws the LTN error. I am now working on finding the mod mix that leads to a hard crash.

Edit: spelling

Holy %$@# its doing that here today too. I have no idea what could cause that. It was running yesterday as it produced the previous error log. Maybe my SSD is failing, ill find the test tools for it. 90mb is often not acceptable to forums, and that is my scratch world where i test things, not meant ...

Its 90MB. Sent a PM with google drive link

Also, starting map 104 runs fine, but of course there is no LTN on it yet. The TLN Demo map loads fine. Something happened with the save I just have no idea what. It effects all 3 autosaves and my last world save, which makes sense as I had left the game running all day and saved it then closed ...

0.001 2018-09-11 14:27:53; Factorio 0.16.51 (build 36654, win64, steam)
0.001 Operating system: Windows 7 Service Pack 1
0.001 Program arguments: "C:\Program Files (x86)\Steam\steamapps\common\Factorio\bin\x64\Factorio.exe" "--wait-to-close" "7808"
0.001 Read data path: C:/Program Files (x86 ...

Last night I saved and shutdown Factorio. This morning I loaded the save and LTN is crashing with:

3964.408 Script @__LogisticTrainNetwork__/control.lua:227: [LTN] on_load: complete
3965.433 Error MainLoop.cpp:1035: Exception at tick 243918042: Error while running event LogisticTrainNetwork::on ...