I can successfully enter any world if it's the first world I enter after the game starts. However, if I exit the world, then I can't enter any world again (including the world I entered just now) until I restart the game. When I try entering a world again, it seems that it's normally loading the world, but then it gets stuck at the world-loading screen. I can't even close the game by the topright close button. I have to close it by task manager.

In short, the game will get stuck at the world-loading screen if it's the second world to be entered.

Modpack version: Any. It happens in any version.

Because of this trouble, I have to restart game when I want to switch world. It costs several minutes to launch the modpack, which means that it costs several minutes to switch world, too. It's unbearable for one who usually switches between lab creative world and survival world.

It seems that the game doesn't return the memory properly when exiting a world.?

However, I can't even enter a void super-flat world for the second time. Is this also caused by Darker Depths? In my humble opinion, Darker Depths should have not affected super-flat world.

It's not impossible given Darker Depths appears to affect the vanilla world generation. It's honestly really hard to tell what Darker Depths is possibly affecting given the source code for it is not public and there's no public issue tracker either.

It's worth noting that I did run into this issue again without Darker Depths installed but only once so far. In general Darker Depths appears to make this issue consistent but the underlying, root issue may lie somewhere else (either in another mod or in the Forge mod loader).

Yeah, I don't see anything that should be causing this in your mod list. I'd suggest going back to v1.3 without any changes. See if the issue still manifests. If so, try disabling Darker Depths only. See if the issue still persists. It's worth trying to reduce the number of differences between the stock v1.3 and a version that works correctly.

OK, I'll try it later.
However, I can't even enter a void super-flat world for the second time. Is this also caused by Darker Depths? In my humble opinion, Darker Depths should have not affected super-flat world.

I have the exact same issue. Unfortunately it created a greater problem, since using the only alternative for closing the game from task manager while it is loading the world has corrupted one of my saves. Luckily there is a backup system, but I lost a lot of progress :(

This appears to be linked to the Darker Depths mod. I disabled that mod in my local install and I can now load worlds back to back without issues.

Thankfully the impact of disabling this mod is minimal as the only items used from it are:

• Aridrock for some cosmetic Chisel recipes
• Limestone for some cosmetic Chisel recipes
• Some crushing recipes related to ores added by that mod
• The ash item in the Thermal Centrifuge for some alchemy things

I have the exact same issue. Unfortunately it created a greater problem, since using the only alternative for closing the game from task manager while it is loading the world has corrupted one of my saves. Luckily there is a backup system, but I lost a lot of progress :(

I'm sorry to hear that. But I have never met this kind of situation. Although I have closed the game process by task manager for many times, my worlds are still normal.

This appears to be linked to the Darker Depths mod. I disabled that mod in my local install and I can now load worlds back to back without issues.

Thankfully the impact of disabling this mod is minimal as the only items used from it are:

* Aridrock for some cosmetic Chisel recipes

* Limestone for some cosmetic Chisel recipes

* Some crushing recipes related to ores added by that mod

* The ash item in the Thermal Centrifuge for some alchemy things

Errrr... I removed this mod and tried again, but I couldn't still load worlds over and over again... The game got stuck just when I load a world for the second time.

Errrr... I removed this mod and tried again, but I couldn't still load worlds over and over again... The game got stuck just when I load a world for the second time.

Could you post your mod list for comparison? I'm curious what might be different between our mod settings as mine appears to be functioning fine now that I disabled that mod. Here is my mod list:

mods.txt

Errrr... I removed this mod and tried again, but I couldn't still load worlds over and over again... The game got stuck just when I load a world for the second time.

Could you post your mod list for comparison? I'm curious what might be different between our mod settings as mine appears to be functioning fine now that I disabled that mod. Here is my mod list:

mods.txt

Here is my mod list. All the mods that is added by me are client side and auxiliary.
modList.txt

I don't see anything that should, in theory, cause the issue. I know, in my case, the issue stopped manifesting when I disabled Darker Depths. I'll double check the differences between our mod lists a bit more closely in a bit.

Yeah, I don't see anything that should be causing this in your mod list. I'd suggest going back to v1.3 without any changes. See if the issue still manifests. If so, try disabling Darker Depths only. See if the issue still persists. It's worth trying to reduce the number of differences between the stock v1.3 and a version that works correctly.

I've been having this problem for a long time on 1.3.

I hate that I have to restart Chapter 4 every time my world gets corrupted and I get stuck at 100% when loading it. Idk what in my world causes it to freeze and IDK how to fix it. Some of my backups have the same issues with loading and I have to redo HOURS or DAYS of progress. It's super frustrating!

I'm better off just not playing the pack anymore since it's so much work. I disabled all the mods suggested above, updated some of the mods and forge, but I'm not getting any improvements to my issue. I'm going to link the log associated with the loading error incase someone knows how to help. https://paste.ee/p/Btnee

Also if anyone knows how to reenable the creosote oil combustion recipes in kubeJS let me know, I'm tired of voiding it in my nullifiers and that's good potential energy wasted.

Oh, and to re-add Creosote Oil as a compression fuel you'll want to add the following line to your recipes.js inside the onEvent('recipes', event => {...} callback:

event.recipes.thermal.compression_fuel(Fluid.of(TE("creosote"))).energy(PREFERRED_VALUE)

Interesting things I noticed, @Spaggom:

[11:49:03] [Render thread/ERROR] [ne.mi.fm.FMLWorldPersistenceHook/WP]: This world was saved with mod chunkpregen which appears to be missing, things may not work well
[11:49:03] [Render thread/ERROR] [ne.mi.fm.FMLWorldPersistenceHook/WP]: This world was saved with mod chunknogobyebye which appears to be missing, things may not work well

Looks like you're missing some mods that should be in the modpack.

[✔️] cavebiomeapi-1.16.5-1.3.7

I see you still have cavebiomeapi installed/enabled. Try disabling that one. It's not needed by any mods except Darker Depths.

[11:46:59] [Render thread/INFO] [ne.op.Config/]: [OptiFine] *** Reloading textures ***
[11:46:59] [Render thread/INFO] [ne.op.Config/]: [OptiFine] Resource packs: Mod Resources, simis_edits, Jaden's+Nether+Expansion.zip
[11:46:59] [Render thread/INFO] [ne.op.Config/]: [OptiFine] EmissiveTextures: Loading optifine/emissive.properties
[11:46:59] [Render thread/INFO] [ne.op.re.Reflector/]: [OptiFine] *** Reflector Forge ***
[11:46:59] [Worker-Main-13/INFO] [ne.op.Config/]: [OptiFine] Multitexture: false
[11:46:59] [Render thread/INFO] [ne.op.Log/]: [OptiFine] (Reflector) Class not present: mods.betterfoliage.client.BetterFoliageClient
[11:46:59] [Render thread/INFO] [ne.op.Log/]: [OptiFine] (Reflector) Field not present: net.minecraftforge.client.model.pipeline.LightUtil.itemConsumer
[11:46:59] [Render thread/INFO] [ne.op.Log/]: [OptiFine] (Reflector) Field not present: net.minecraftforge.client.model.pipeline.LightUtil.tessellator
[11:46:59] [Render thread/INFO] [ne.op.Log/]: [OptiFine] (Reflector) Class not present: net.minecraftforge.fml.common.ModContainer
[11:46:59] [Render thread/INFO] [ne.op.re.Reflector/]: [OptiFine] *** Reflector Vanilla ***
[11:46:59] [Render thread/INFO] [ne.op.Config/]: [OptiFine] Loading optifine/color.properties

Looks like you've got Optifine installed. Shouldn't be an issue but worth disabling it to see if that helps at all. The closer you are to the stock 1.3 release the easier it is to rule out issues.

[11:46:59] [Worker-Main-14/WARN] [libVulpes/]: Cannot add recipe!
[11:46:59] [Worker-Main-14/WARN] [libVulpes/]: null

I'm seeing a slew of these errors in the startup area of your logs. Are AdvancedRocketry and libVulpes up to date?

Lastly I see some KubeJS errors related to Darker Depths. Can you try applying the changes from here to your KubeJS server_scripts/recipes.js file?

https://github.com/glektarssza/create-above-and-beyond-fork/commit/cf8e71d0a75ba0b0f1272bb16f1de63c85262a05

Looks like you've got Optifine installed. Shouldn't be an issue but worth disabling it to see if that helps at all. The closer you are to the stock 1.3 release the easier it is to rule out issues.

Disabled that, thanks for the heads up! Speculated it was something to do with rendering.

I'm seeing a slew of these errors in the startup area of your logs. Are AdvancedRocketry and libVulpes up to date?

I overlooked that while updating some mods, so I didn't. Just did tho, thanks! :)

Lastly I see some KubeJS errors related to Darker Depths. Can you try applying the changes from here to your KubeJS server_scripts/recipes.js file?

Oh, and to re-add Creosote Oil as a compression fuel you'll want to add the following line to your recipes.js inside the onEvent('recipes', event => {...} callback:

event.recipes.thermal.compression_fuel(Fluid.of(TE("creosote"))).energy(PREFERRED_VALUE)

Alright, I implemented the code for the KubeJS recipe changes and it works!

Thank you programmer chad for your wisdom and sparing your time to help out! I would've easily overlooked this without your help and my instance is finally fixed! :D

I'm having the same issue but not all of the same log errors Spaggom had. I'm on v1.3 without optifine.
(Example log: https://gist.github.com/Gamarleton/917a7564e57acf30f66b45922ecb158c )

I feel like if there are missing/outdated packages the modpack creator should add/update them to the modpack once they've tested what version works, but I don't see any other versions for advanced rocketry.

I tried to see if there was any update log to the LibVulpes mod but when I went on the webpage all I could find was minecraft 1.12 versions, so I'm not sure which of the three newer options in the curseforge app to update to and I'm worried about breaking my world and losing all of my progress.

I'm having the same issue but not all of the same log errors Spaggom had. I'm on v1.3 without optifine. (Example log: https://gist.github.com/Gamarleton/917a7564e57acf30f66b45922ecb158c )

I feel like if there are missing/outdated packages the modpack creator should add/update them to the modpack once they've tested what version works, but I don't see any other versions for advanced rocketry.

I tried to see if there was any update log to the LibVulpes mod but when I went on the webpage all I could find was minecraft 1.12 versions, so I'm not sure which of the three newer options in the curseforge app to update to and I'm worried about breaking my world and losing all of my progress.

@Gamarleton Definitely back your world up before making any changes. I've not had this issue lately but I also updated a LOT of mods in this pack. It's kind of a custom pack at this point as I also added a few mods and changed the KubeJS scripts to integrate them into the pack (e.g. I added framed storage drawers and added custom recipes for them).

I can share a link to my custom pack after work today for you to try if you want. If it fixes your issue that would narrow down the list of mods to look at dramatically.

Here's a list of what mods I have and what versions they're at.