i am doing a YouTube let-play and, out of know where my old will not load up and saying it a bug and something could be miss up with the / progress
what can i do. help for i can get back to playing and don't have to start all over ether

forge mod loader detected that the backup level.dat is being used

This may happen due to a bug or corruption, continuing can damage your world beyond repair or lose data / progress.

It's recommended to create a world backup before continuing.

Can you be more precise and cover more about your issue? I don't understand enough in order to be able to help.

let me take a screen shot will that help more

forge mod loader detected that the backup level.dat is being used

This may happen due to a bug or corruption, continuing can damage your world beyond repair or lose data / progress.

It's recommended to create a world backup before continuing.

Copy the saves another location (backup) and proceed. If it corrupts you world you still have the backup.

i did that and it wont let me go anywhere else

What happened before this occurred?

idk, i was playing it this morning run just fine, got off game thin at night go to do another recording and it showing up now.

The issue here is that the leve.dat contains the item ids. Meaning we can't just use another or new one. Do you mind zipping and uploading the world if it isn't too big?

where do i send it at, i just zip it

drop box or whatever you use.

need email to share with you throw dropbox

Share link or Copy public link whatever it is called.

https://www.dropbox.com/sh/z286m2qsvz7odmm/AAD1UC2VenJWfXs3jiwChGAqa?dl=0

thank you. Which version of the pack and launcher are you using?

it seems to be missing files. It only contains 4 regions of the overworld, the world where you never go to in the pack.

https://www.dropbox.com/s/m9nqn4bhla81ah1/world.zip?dl=0
the newest one

This is how a new galactic science world looks like. All those DIM-nn's are missing in yours, are you sure that you looked at the right location?
https://i.imgur.com/SS2zCK0.png

that was my back up one, i can show you the main one

going to send you the hole folder be a few sec for it to be put on dropbox

if that is your backup, you can delete it, because it doesn't contain the world. The moon is DIM-28

https://www.dropbox.com/s/j64d8ld6r8zpd2p/saves.zip?dl=0

I'm sorry, I could not figure out what is wrong with it. I can only tell that it is totally mixed up. Like two saves being copied into each other.
The zip contains two saves, both named the same, but only one will show up ingame. The one that does, does not have a DIM-28. The other that does not show up, also doesn't show up if you load it alone (delete the other). Copying the level.dat from the other world over does let it show up but loading causes the same bug. How much time did you spend on it yet?

i did 1 video on it only, and i think i got throw one night time only and just trun day time when i was going to do recording-https://www.youtube.com/watch?v=BEGAeqIYnLs

Probably best to start a new world. Then go ESC-open to lan-enable cheats.

Use /hqm edit and unlock the quests you had. Then /gamemode 1 - cheat in what you miss - /gamemode 0.

Save, enter, play more :)

ok thanks, just wanted to report the bug and help out.