JaariAtmc

Make sure to get all your mods off Curseforge (twilight forest for example: https://minecraft.curseforge.com/projects/the-twilight-forest). After getting all your mods there, see if it still happens.

Go to your tekkit world save (%appdata%\.technic\modpacks\tekkitmain\saves\NAMEOFWORLDSAVEHERE\ and delete the Enderstorage folder. Also, hope you didn't have any important stuff in those enderchests, as that's corrupted and gone anyways...

Modpack.jar.jar (remove the .jar from the modpack file in the bin folder), and why are your mods down two folders?

See if removing mineshaft.dat and villages.dat helps.

Did you enable Village Generation again?

https://namemc.com/profile/biffa1.1 Your account is not migrated (aka, you have a minecraft account, not a mojang account). Also, the screenshot you put here shows that you do not have a purchased minecraft/mojang account.

Your username is...? (no, not email, your username). Otherwise, post your version of this screen (login to your mojang account):

Which Bteam version are you using?

Simply use Stone instead of Cobblestone. Cobblestone is indeed overriden by Chisel, and that somehow breaks it. Stone doesn't have this problem though.

Cannot check issue if you disable or remove the modpack from the platform.

This is a modpack bug report, and a bloody obvious one too. And its all about a crappy rehost of the FTB LAUNCHER modpack Infinity...

It might have to do with the modpack being no longer available for download...

Then up to 8 GB, if not working still, 12 GB. You are running 1.12, with a x256 texturepack, and you are running pixelmon, so whether it works or not is the pixelmon devs issue, not ours. The /care c(_) is empty.

Up your RAM to 6 GB.

\jdk-9.0.4 You are using Java 9, Forge does not work with Java 9 or Java 10. Move back to Java 8.

And you just gave no actual usable information at all.

More like almost no one comes to these forums anymore, due to using Discord for tech help. You might want to do a malware check though, as this is usually caused by malware.

Have you even bothered to check the recent posts?

Yes. Only using Java 8.

You find it too bulky, yet you try to make it less bulky by using past 1.10 MC which is bulky with only minor mods... Btw: cofh config folder -> world -> config, minecraft.json and thermalfoundationores.json. And that's all you should need.

Then include a log with that.

Grab 64-bit java, allocate 2 GB RAM instead. http://javadl.oracle.com/webapps/download/AutoDL?BundleId=234474_96a7b8442fe848ef90c96a2fad6ed6d1

Why are you still using Java 7? Most 1.7.10 mods require Java 8.

You need 3 main folders: bin, config and mods. Side folders may be things like Flan (Flans mod) or resourcepacks (should be obvious). The mods folder you got, although you should download all mods from CurseForge. The config folder should be self-explanatory. Just make sure the configs are actually included. The bin folder just contains your used version of forge (forge universal) which you rename to "modpack". In case all files have their extensions visible, rename it to "modpack.jar" instead.

When signing into the Technic Launcher, you must have a legitimate Mojang account with a purchase of Minecraft associated with it, and you must be using the details for that Mojang account You must provide the same credentials as you would use to sign in at https://account.mojang.com/login. This is typically your Email and Password. The login information is used to verify your Minecraft information for Mojang's server. If this information fails, it is either your launcher not able to access the internet or your email/password failing. If your account information is incorrect, then you need to go to Mojang and reset your password and/or further bother them. If it's your internet, make sure you have permitted Java to be able to access the internet. For those of you who want to be 100% sure your information is not being stolen by Technic, here is the code used: https://github.com/TechnicPack/MinecraftCore/blob/master/src/main/java/net/technicpack/minecraftcore/mojang/auth/AuthenticationService.java#L97:L111 Yes, this was copypasted from the discord server.