Forge update errors

[Scikiat]

Title Forge update errors

Launcher Type FTB Launcher

Modpack Direwolf20 1.12.2

Modpack version 1.10.0

Have you modified the pack? Yes

Link to log file https://paste.feed-the-beast.com/view/cd8981da

Details of the issue Added the following mods, which were working (noted exception)
-Mekanism 4.5.341
-MekanismGenerators
-MekanismTools
-Plustic-6.4.0.0
-Tinkers_+Addons-1.12.1-1.0.7
-TinkerToolLevelling-1.12-1.0.3
-Thaumcraft-1.12.2-6.1.BETA (Was not working with Forge 1.12.2-14.23.2.2627; the error stated that I needed at least 1.12.2-14.23.2.2637)

Due to the above issue with Thaumcraft, attempted to update forge.
Installed forge into libraries\net\minecraftforge\1.12.2-14.23.2.2637
Updated pack.json on the following three lines:

"name": "net.minecraftforge:forge:1.12.2-14.23.2.2637:universal",
"checksums" : [ "fb3a00e75f1a8414ce272acfcca056c951dcfb57"
"id": "1.12.2-Forge14.23.2.2637:universal"

Saved the file, ran Direwolf20. Error is in the pastebin.
Tried with multiple versions of Forge (including latest/latest recommended), all with the same errors, so I'm clearly missing something. I have tried searching for the past few days, and haven't seemed to find a good fix. Apologies in advance if it's something dumb. Thanks!

 

[badmatje]

i have the same issue, but instead the dire pack, i trying to install it on ftb revelations. same problem on creeperhost.

 

[Furious1964]

The mods are not the problem as I removed the entire folder and still the game crashed. There's something else involved.

 

[MacAisling]

Apparently that is not the right way to update to a newer forge version. I have no idea how to do it on the legacy FTB launcher. On the Twitch (Curse) launcher, it is just a couple clicks through the menus. When I installed forge on the vanilla launcher, it involved an installer app because it had to make changes inside the Minecraft jar.

 

[Furious1964]

When I install the pack, how do I upgrade Forge? There was nothing in the menu that I saw that could do it.

 

[MacAisling]

When I install the pack, how do I upgrade Forge? There was nothing in the menu that I saw that could do it.

 

[Furious1964]

OK, got it to work. Thanks...although I would have preferred not to install Twitch and just use the regular FTB Launcher. Hopefully, Forge in the pack will be updated for that.