Hi SE community!

Here are the important to know when you have problems uploading your creations on the Workshop.


1 - Make sure the item thumbnail is lower than 1 MB because the upload will fail.

2 - Try by deleting the thumbnail :

Saves and Blueprints are here :
Hit the Windows key + R and type in : %appdata%\SpaceEngineers
Goes to the SpaceEngineers folder
C: users / your username / appdata / roaming / spaceengineers

World saves goes here :

C:\Users\ (your username) \AppData\Roaming\SpaceEngineers\Saves\ (Your Steam ID)

Blueprints goes here :

C:\Users\ (your username) \AppData\Roaming\SpaceEngineers\Blueprints\local

+ > Find your item, open the folder, delete the thumbnail (thumb.) and go in-game to publish your item.

You may try to add a new thumbnail later by updating the item, it is very easy to update Workshop items cause we just have to redo the exact same thing we did the first time publishing.
You may use Rox's trick on how to change thumbnail with cmd from the old website, the page still load :
https://forum.keenswh.com/threads/workshop-thumbnail-for-ingamescripts-broken.7402745/#post-1287105887


3- Make sure the in-game Steam cloud stays disabled from the game options because that creates "Cloud Blueprints" and we can't edit/publish those.
C:\Users\ (your username) \AppData\Roaming\SpaceEngineers\Blueprints\cloud

> Create your Blueprints (Ctrl+B) with the in-game cloud OFF to create LOCAL Blueprints because only the Local ones can be edited and published on the Workshop.

Use the Workshop to save your creations because that is the *"Default Steam cloud" where we can save without limits and you will be able to load all from any PCs where you login with your Steam account.
(just set your WS item Hidden for Perso use if you don't want to share public)

The in-game Steam cloud give limit problems where a lot reported so better keep in-game Steam cloud OFF as it is on default to avoid messing with the cloud folder in appdata SE.

In-game Steam cloud is made to auto-transfer Cloud Blueprints to your second PC having the same Steam account and not made to save at all.

Use the Workshop as Backup system because :
-> No limits over there.
-> Can update our items and the Workshop will keep all versions we can revert back.
-> You will never lose your Workshop item.
-> And be able to load all from any PC where you login with your Steam account.

* Your Workshop is like the "Default Steam Cloud" where you can save without limits and never lose any of your creations, it's a "Cloud" that comes with Steam all setup on default settings and you will not have to enable any cloud options to use it.
= Why I call it the "Default Steam Cloud".



To do before disabling the in-game Steam cloud :

1 - You will have to paste all your "Cloud Blueprints" in a creative world.

2 - Go disable the in-game Steam cloud in game options.

3 - Load the creative world where you pasted all your "Cloud Blueprints" and redo LOCAL Blueprints this time.


https://steamcommunity.com/app/244850/discussions/0/3073117690265733366/



Some were able to fix and links to all discussions have been added in that recent discussion with solutions :
https://steamcommunity.com/app/244850/discussions/0/3050609385673865809/

NEW info about Steam: Error accessing service :
https://store.steampowered.com/account/remotestorage
got 200 SE files in here?
that will stop you from being able to publish Workshop items with thumbnail, so removing your Cloud Blueprints in appdata SE Blueprint folder should help.

FIX
Steps added to pinned important :
https://steamcommunity.com/app/244850/discussions/0/3192489172307109616/

___________________________

PS

1 - Select your save.

2 - Click the "Publish" button on the left.

3 - Choose a proper Tag, select Steam Upload and click the OK button.

4 - Your world will be uploaded to Steam Workshop.

_______

1 - Open the Blueprints menu F10 in-game.

2 - Select your Blueprint in the list.

3 - Click the "Publish" button.

4 - Choose a proper Tag, select Steam Upload and click the OK button.

5 - Your Blueprint will be uploaded to Steam Workshop.

________

Blueprint as example :

-> Aim at the new updated creation, that should have the same grid name.
-> Hit Ctrl+C to copy.
-> Open the Blueprints window F10.

-> Select the Original Local Blueprint so the Local one you published the very first time (not the Workshop one)

-> Click the "Replace" button.
Doing so will update the Local Blueprint so change it for the new version.

-> and republish that Local updated Blueprint.
=
That is how we update existing Workshop item

+
Why it is important to keep and backup the original Local Blueprint, to be able to update the Workshop Item.

In other words :
-> We have to redo the exact same thing we did the very first time publishing to update the existing Workshop item.




Message to community :

Add your workaround to help