I cannot load this save file (it's not a problem on its own, I already finished the level, but would be cool to not have such issues in the future).
dlc1_campaign_level2_name_20170118230612
dlc1_campaign_level2_name_20170118230612.meta
As a bonus, if after the failed attempt I'm trying to load another save, I get
Well, not sure there is a way for me to find out the version, there is nothing like that in the loading menu, and of course I don't remember which version the game had back then.
I made original save file 7.18.2016. Yesterday I loaded it and at some point saved the game in a new slot - that's where the uploaded corrupted save came from. I still can load that old save from 2016, but not this new one.
dlc1_campaign_level2_name_20160718183054
dlc1_campaign_level2_name_20160718183054.meta
So far new saves work, but I saved many times on the corrupted one after creating it.
It looks like the save game file got corrupted, it lost a reference to a block and this can not be repaired.
So one tile is completely missing in the data but the game always requires that all tiles in the map bounds exist.
All you can do is trying to continue from an earlier save I fear.
However we let it now fail more gracefully and prevent that it causes issues on attempting to load another level.
Unfortunately this is all we can do about.
Thank you for giving us a save game which revealed that this is even possible.
The likely hood is that the save is totally corrupt. This can occur when the saving process is interrupted, most noticeably when saving large levels. There's not much that can be done to help you on that front.
Fortunately we will can look into ensuring that a failed load does not prevent further play.