Space Spidertron failed to load when I enable Krastori2 mod. Error message says:
Failed to load mods: space-spidertron/prototypes/docked-spidertron.lua:296: Could not find any spiders that can dock
stack traceback:
[C]: in function 'error'
space-spidertron/prototypes/docked-spidertron.lua:296: in main chunk
[C]: in function 'require'
space-spidertron/data-final-fixes.lua:1: in main chunk

It happened with SE version 0.6.99 and K2 version 1.3.8, and persisted after update to SE version 0.6.104 and K2 version 1.3.18.

I tried to disable all mods except SE and K2 requirements and it did not helped.

Hello HellMaus! That's an odd issue which I didn't expect. I just loaded SE 0.6.104 with K2 1.3.18 with Factorio 1.1.80 with the latest Space Spidertron 1.2.2 and it loaded fine.

Could you possibly give me your log file? That will help me diagnose what's wrong. Or even better, a save that's not loading.
https://wiki.factorio.com/Log_file

Thanks for the report!

Could you possibly give me your log file? That will help me diagnose what's wrong. Or even better, a save that's not loading.

I uploaded the log file to Dropbox: https://www.dropbox.com/s/ybrknej61xgzfa2/factorio-current.zip?dl=0

Could not provide a save. This error message pops up when I start Factorio application before I can load any saves.

That's weird, I can recreate your setup completely with all the same versions, but still no crash.

That makes me think it's some setting you have activated, but I can't imagine which one. So I save might be useful, which you can provide. First remove Space Spidertron so that the game starts up normally. Create a small save, and give me a small link to that. A save that I can download, add Space Spidertron, and then it should crash.

Here are the saves:
1) https://www.dropbox.com/s/b0udczbmujdsxtj/test1-Krastorio2.zip?dl=0 - K2, K2assets and flib enabled, Space Spidertron disabled
2) https://www.dropbox.com/s/8qbpmbp0g6rrwfy/test2-SpaceSpidertron.zip?dl=0 - K2, K2assets and flib disabled, Space Spidertron enabled

Both saves can be loaded without crash. I loaded first save, enabled Space Spidertron and got crash. Hope that these saves will be of any help.

Ah, it was the K2 setting "Constant Vehicles" that caused a problem. Fixed in newest release. Thanks for the report and help in finding the issue!