Unexpected error [MC 1.15.2, Forge 31.1.9]

[sunshine]

First of all, I am using Twitch. Not sure how to get a proper log for Forge based on DaemonUmbra's forum signature - we tried following the instructions for launching the game through the Mojang launcher, but it launched vanilla Minecraft despite us changing the GameDir folder to the pack's instance. I can try this again later after following the video, but this issue is happening on my girlfriend's computer and I'm trying to help her solve it long-distance, as she struggles more with computers than I do, and getting anything from her is... a challenge. (I love her, but it's a challenge.)

 

The game crashes in the Twitch-associated Mojang launcher, before the window with the load screen opens. It returns "Unexpected error".

I know that Twitch can fail to install things properly, but we've tried "repair profile" to no avail.

 

The pack I made for us only contains 8 mods, all of which were obtained through Twitch (No 9minecraft or whatever the site is):

AppleSkin-mc1.15.2-forge-1.0.13.jar

backpacked-1.4.1-1.15.2.jar

FastLeafDecay-v22.jar

Hwyla-forge-1.10.8-B72_1.15.2.jar

journeymap-1.15.2-5.7.0beta1.jar

jei-1.15.2-6.0.0.3.jar

Neat 1.6-20.jar

OreExcavation-1.7.151.jar

 

The packs I've made for 1.12.2 work fine, and this pack works fine on my computer as well. I made sure to not get a Fabric version of Hwyla on accident, and the mods seemed fine while playing when I tested the pack on my machine.
The error it was giving her in the latest.log file was something about Forge not being able to find Minecraft. I tried sending her files from my install of it, but the game still crashed even with those. If none of this is gives any idea what's going on, I could try and get her to send the latest.log file if that would give any useful info. Any help is appreciated.

[DaemonUmbra]

Changing the GameDir doesn't tell the launcher to use Forge, it tells it where to look for saves, logs, configs, screenshots, mods, etc.

You tell it to use Forge by changing the Minecraft Version to a Forge version

[sunshine]

Err... yes, I believe we did that too, but we likely still did it wrong, I can't really remember at this point as it's been a couple of days :P

I was able to get the Twitch log from her, and it does look like she's not using the wrong version of Java (which was one of my worries), it seems that it's really just an issue with Twitch failing to properly install Forge, so I'm going to see if I can get her to manually install it. Will update with my findings, and if that doesn't work, will try again to get a proper Forge log file

[sunshine]

So as it turns out, Twitch was refusing to install either Forge or Minecraft. Had to send her my copies of the Minecraft client items and of Forge, but the pack is up and running now. Still don't know what caused this, but I absolutely blame Twitch

Edited April 17, 2020 by sunshine

[DaemonUmbra]

Twitch seems ok at distributing their mods and not much else.

Personally I use Twitch only to install packs, then I set the GameDir to the modpack dir and use the regular launcher