I was using mods. So I disabled them all and tried to load the save. Still can't get into it. Thankfully I had working autosaves and it's a blueprint map with my blueprints constantly moved to my library. But it is my main project world so it was a bit scary for a while there anyway.
*Edit* I uploaded the save file here but I get "Error parsing server response." every time. So external upload here:
https://www109.zippyshare.com/v/vJL4Ztc6/file.html
[0.17.31] Corrupted save.
[0.17.31] Corrupted save.
- Attachments
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- factorio-current.log
- (31.57 KiB) Downloaded 105 times
My mods: Capsule Ammo | HandyHands - Automatic handcrafting | ChunkyChunks - Configurable Gridlines
Some other creations: Combinassembly Language GitHub w instructions and link to run it in your browser | 0~drain Laser
Some other creations: Combinassembly Language GitHub w instructions and link to run it in your browser | 0~drain Laser
Re: [0.17.31] Corrupted save.
Does this still happen in the latest 0.17? I believe it was fixed.
If you want to get ahold of me I'm almost always on Discord.
Re: [0.17.31] Corrupted save.
I can open the save now in 0.17.36! 
My mods: Capsule Ammo | HandyHands - Automatic handcrafting | ChunkyChunks - Configurable Gridlines
Some other creations: Combinassembly Language GitHub w instructions and link to run it in your browser | 0~drain Laser
Some other creations: Combinassembly Language GitHub w instructions and link to run it in your browser | 0~drain Laser