Crash when starting FTB with multimc

[aasd1]

Hello there,

im new to minecraft mods at all and probably a bit unknown in that kategory so please dont be upset if i dont understand things at the first time.

So i have followed the Tutorial on youtube, wich is a bit fast in my taste. Whatever, i have installed multimc, the latest version, and have finished the tutorial and made the instance FTB with all the correct settings.
I have also done it a few times, always the same result.
If i want to launch it it shows me the following error and says minecraft crashed:

Instance started with command: "C:\Program Files\Java\jre7\bin\java.exe"  -Xmx1024m -Xms512m -cp "C:\\Users\\Simon\\Desktop\\MultiMC" -jar MultiMCLauncher.jar "C:\\Users\\Simon\\Desktop\\MultiMC\\instances\\FTB\\.minecraft\\" "MYUSERNAME" "4861397422572378756" "MultiMC: FTB" "854x480"

Loading jars...
Loading URL: file:/C:/Users/Simon/Desktop/MultiMC/instances/FTB/.minecraft/bin/minecraft.jar
Loading URL: file:/C:/Users/Simon/Desktop/MultiMC/instances/FTB/.minecraft/bin/lwjgl.jar
Loading URL: file:/C:/Users/Simon/Desktop/MultiMC/instances/FTB/.minecraft/bin/lwjgl_util.jar
Loading URL: file:/C:/Users/Simon/Desktop/MultiMC/instances/FTB/.minecraft/bin/jinput.jar
Loading natives...

Exception in thread "main" java.lang.VerifyError: (class: net/minecraft/client/Minecraft, method: k signature: ()V) Incompatible argument to function
	at java.lang.Class.getDeclaredFields0(Native Method)
	at java.lang.Class.privateGetDeclaredFields(Unknown Source)
	at java.lang.Class.getDeclaredFields(Unknown Source)
	at MultiMCLauncher.getMCPathField(MultiMCLauncher.java:283)
	at MultiMCLauncher.main(MultiMCLauncher.java:126)
Instance closed its output 0.
Instance closed its output 1.
Instance exited with code 1.
Minecraft has crashed!

I have no idea what to do, and also havent found any releated threads.
Im glad about any help

greez Ayce

 

[whizard_dragon]

What version is your minecraft jar for that instance. If you have not downgraded to 1.2.5 beforehand then it would not be happy with a 1.3.2 jar. If you have downgraded then I don't know.

 

[aasd1]

Well, no i havent downgraded it before, because anyone told me the downgrade is within the downloaded package.
So, how do i downgrade it ?
:edit:
Downgraded it with multimc, still the error
:edit2:
There is also "a1.2.5" might be this ?

 

[aasd1]

Maby anyone else can help me ?
Probably did something wrong with the downgrade ?

 

[slay_mithos]

Ok, then follow this, all in MultiMC (4.1.0 for me):


1. Create new instance, name it however you want.

2. Run the instance once to download the jars etc, Quit when you are on the Minecraft main menu.

3. Select it and click the "Downgrade" button on the right.

4. Select "1.2.5" in the menu, then click on "OK", will download the 1.2.5 version.

5. Click on the button "View Folder" (at the bottom).

6. Copy all the files from the modpack (previously extracted somewhere) here.

7. It should prompt you if you want to fuse folders, click "Yes" every time.

8. Restart MultiMC.

9. Click on the "Edit Mods" button.

10. Drag around the three "jar mods" so that you have Forge, codechicken and notenoughitems in this order.


That is it for the instance.

Now copy the map itself under the "saves" folder, inside the ".minecraft" in the instance folder, and you are ready to go.


Just to make sure, I did all the steps while writing it, to be sure not to forget anything.

Hope it helps.

 

[aasd1]

worked absolutly fine, im so thankful =)
i have no idea what i did wrong.
At least the order of the jars is another then in the tutorial video.

thx alot again

 

[LegitNeek]

worked absolutly fine, im so thankful =)
i have no idea what i did wrong.
At least the order of the jars is another then in the tutorial video.

thx alot again

That video is probably outdated.

 

[aasd1]

Yep , that could be a reason, or i may should have downgraded it before i install the modpack.
I hope this threat can also help other people with the same issue
:edit:
How do i open notenoughitems ingame ?
Press O in the inventory doesnt work

10. Drag around the three "jar mods" so that you have Forge, codechicken and notenoughitems in this order.

are you sure about the order?

i changed the order, works fine now

:edit2:
seems like it worked, and not it doesnt againw wtf ?

:edit3:
Set GUI settings to NORMAL -> works

good luck

 

[slay_mithos]

I am sure, it's the order they wrote in the readme.

It also works without changing it, but better be safe than sorry, right?

 

[LegitNeek]

I am sure, it's the order they wrote in the readme.

It also works without changing it, but better be safe than sorry, right?

I have told Slow before now that the install instructions are outdated. I even made my own install guide on the forums but as with everything else, it was lost with the forum switch.

 

[MICHAELFlyin]

How do you get the FTB pack?