Crash Log : https://pastebin.com/XQMdnrL7

Using Versions :-

1. IC2NuclearControl-2.3.3a-Exist.jar
2. IC2.Classic.Version.1.1.3.5.jar

Crash Summary :

Caused by: java.lang.NoSuchFieldError: itemEnergy
at ic2.core.IC2.load(IC2.java:582)

Any Solution or help is much appreciated

Hey.

Error is caused by Nuclear Control mod.
Try to update this from here

You also can update IC2 Classic up to the latest 1.7.10 version which is 1.2.1.6 from here

@AgentHani he is right your version & Nuclear Control are extremly outdated.

@Speiger I know but i dont think that really solved the problem,

Here is how this problem started (will be explaining step by step clearly along with the logs) =

Since i am playing on my own modpack on the server, I used to usually import and export mods and do updates and stuff like that

1. First i had very old versions of computronics, asielib & railcraft installed in my server and i used to play with these versions in my current server world for long time,

2. I then decided to put TrainCraft mod onto my server's mod file and traincraft ofcourse requires latest versions of computronics, asielib & railcraft.

3. So i then started updating those 3 mods (computronics, asielib & railcraft) to its latest versions onto my server.

4. Then i started to encounter this crash -> https://pastebin.com/wDg7u0Uu

5. Its stated in the log that i have corrupted the world and i must reverse those mod's versions back to its own place in order to get it work.

6. After reversing those 3 mods, the server crashed and asked me to update railcraft back to 9.11.0.0 https://pastebin.com/tVCYJkHV [FIRST LOG]

7. After updating railcraft back to 9.11.0.0, I started to get this IC2 Item Energy Error.. -> https://pastebin.com/11ZAnWjX [SECOND LOG]

• After step 7 i started to report the issue here in github -

8. After reporting the crash log right here, @CrossVas told me to update Both IC2 Versions to latest

9. I Updated both IC2 Versions to the latest, still got the same IC2 Item energy error -> https://pastebin.com/SYVwuvQd [THIRD LOG]

10. Afterwards i guess i knew why railcraft told me to update back to 9.11 (in step 6) because i forgot to delete traincraft from the mods folder..

11. After deleting traincraft from the mods folder, I was able to now reverse railcraft back to its own
    old version like before 9.7.0.0.

12)I then reversed Both IC2 Mods back to its old version again so that it should work with old version railcraft but then i still now get the same IC2 Item Error..

https://pastebin.com/0iWK9ynh [FINAL LOG]

I am very sorry to interrupt but i didnt knew railcraft had integration with IC2.. as you can see here on the changelog of railcraft's last line of this version : "FIX: Fix minor issue with Energy Loader's IC2 integration."

What could be the cause of all of this regarding IC2 Item energy? Did i corrupted my world or there is a conflict going on between IC2 and railcraft? it all started when i placed traincraft and updated those 3 mods.

One of your mods has a very outdated IC2Exp API installed into his jar. Thats why its caused.
The mods API gets loaded way before my API and causes a crash since it has missing code.

Thats not ic2cs fault.

Ok, i will try my best to find out the mod that has an outdated ic2exp api.

thx for the info & help .

np