My saves from 1.3.3 won't load since my update to 2.0.0. Also only my most recent character save from 2.0.0 will load after I have stopped playing and come back to the game later (game shutdown). I just get an endless loading screen.

Also, am I going to have to re-download the entire game installer and all DLC's for Linux since there is no update (e.g. 1.3.2d to 1.3.3 update)?

Not that it helps, but I get a similar experience trying to load old games. I guess I sort of expected to have to start over again, anyway, given the major version number bump. It'd still be nice if the game could auto-translate from older versions, somehow. Personally, I'll just start over again once I get to the Ps in my backlog (currently barely on B, so it'll take a while). I'd like to wait until Bag of Tricks works with the new game, as well.

If you want to try it out, you can use galaxy features in lgogdownloader, including reverting to older versions. I've never used this feature, though, and don't know what it expects or does, precisely. It'll probably be a large download no matter what you do, though.

Edit: I played around with it a bit, and the only good part about using galaxy is that you can get the 1.3.3 Windows version of the game (there are no installers for 1.3.3 or earlier on Linux). Given that the game is primarily written in Mono, you can probably just copy the Linux-specific stuff (executable and anything in the x86_64 subdirectories) from 2.0.1. I still had a 1.3.2d installation on a backup drive, so I can revert to 1.3.3 by patching that, if I want. I'll just wait until things settle and start over, though.

From Player.log, an apparently infinite loop of these two error blocks while loading:
This is a bug. It should report load failure instead of retrying in an infinite loop.
-------------------------------
(Filename: <b2cc8cf62b6f47a6a3f731b423435fde> Line: 0)

NullReferenceException: Object reference not set to an instance of an object
at Kingmaker.Player.Dispose () [0x00034] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.EntitySystem.Persistence.Scenes.SceneLoader.DisposeArea () [0x00030] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.Game.DisposeState () [0x00000] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.EntitySystem.Persistence.Scenes.SceneLoader+<LoadMainMenuCoroutine>c__Iterator9.MoveNext () [0x00156] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.EntitySystem.Persistence.LoadingProcess.TickLoading () [0x0000c] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.EntitySystem.Persistence.LoadingProcess.Update () [0x000e0] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
UnityEngine.Logger:LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception)
Kingmaker.Runner:ReportException(Exception)
Kingmaker.EntitySystem.Persistence.LoadingProcess:Update()

(Filename: <b2cc8cf62b6f47a6a3f731b423435fde> Line: 0)

NullReferenceException: Object reference not set to an instance of an object
at Kingmaker.Player.Dispose () [0x00034] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.EntitySystem.Persistence.Scenes.SceneLoader.DisposeArea () [0x00030] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.Game.DisposeState () [0x00000] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.EntitySystem.Persistence.Scenes.SceneLoader+<LoadMainMenuCoroutine>c__Iterator9.MoveNext () [0x00156] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.EntitySystem.Persistence.LoadingProcess.TickLoading () [0x0000c] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
at Kingmaker.EntitySystem.Persistence.LoadingProcess.Update () [0x000e0] in <b2cc8cf62b6f47a6a3f731b423435fde>:0
Rethrow as LoadGameException
at Kingmaker.EntitySystem.Persistence.LoadingProcess.Update () [0x00150] in <b2cc8cf62b6f47a6a3f731b423435fde>:0

I have the same problem on Windows.
And NO. I don't have any mods.

The game doesn't load ANY saved games after the new patch.

I know you just asked the OP, but I get the same behavior with or without mods when trying to load 1.3.3 saves. Spinning forever, filling the hard drive with error messages rather than aborting the load with a message.

I am unable to reproduce the 2.0.0 save loading issue the OP reported, though, so maybe it's fixed in 2.0.1.

Additional Info:

I was able to load games for characters till 10th level or about the beginning of the Varnhold Secrets Main Storyline.

Another problem I ran into was loading saved games and having characters from previous saved games in the party and not the ones that should be there.

The party characters were there but not in the character icon bar.

Starting new games and loading saved games with player characters of level 10 or below works.

Are you playing on version 2.0.2?

I'm on Linux (Arch) and I can now load my old saves from v1.3.3, even the ones where I have been using mods, without problems.

I don't know if it made a difference but I made a bug report when it was version 2.0.1 sending my player.log and save.

Update:

As of now with Patch 2.03. the saved games are available for me again.

Thank you!!!

Good to hear it works again, I couldn't load my saves using 2.0.1.

Any chance of getting incremental updates between the 2.0.X versions on Linux? Or should I wait a few more days for it to stabilize? These 27 GB downloads take a long time... ;)

Yeah, that would be nice, at least to determine whether or not it's fixed (I'd still download the full thing anyway). I think it's up to gog to do that sort of thing, though, and they've lapsed behind in the past, too. I didn't even get an update notice for the game since 2.0.1. The "galaxy" support in lgogdownloader might do incremental updates without patches, but I haven't looked into it and I guess I'll just wait 3-8 hours or whatever with my current connection to find out if it actually fixes anything.

Edit: downloaded, installed, tested: loading old games seems to work now. Yay! Didn't test much, though.

Edit 2: just to be clear, 2.0.3 is the version which fixed loading for me. However, now that it no longer fails, I have no idea if the bug of an infinite error loop in place of an abort and error message is fixed, but I guess I don't care any more.

My latest save files do not load after updating to 2.0.2

I always get the same error, see attached pics. I always use only 1 savegame and the autosaves... Please help!

Yes. That worked. I played 2h, stopped for diner and then the error occured. That's why I was panicing. Doesn't make sense to me...