Solved FTB Infinity Evolved Skyblock - "Exception in server tick loop"


Active Member
Dec 15, 2019
Operating System: Windows 10 (10.0.19044)
Local Server, not Hosting Service
FTB App Version: 202206081143-2e021f8e74-release (although i think this is irrelevant to the issue)
No additional mods added
Processor Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz, 4001 Mhz, 4 Core(s), 8 Logical Processor(s)
Installed Physical Memory (RAM) 24.0 GB
WDC WD10EZEX-00BN5A0 Size 931.51 GB (1,000,203,087,872 bytes)

I have been looking around for a solution to the problem on the forum, but I can't find one, so I decided to make my own post. I am not really sure what is wrong besides potential bugs in the .jar files because the problem is from a cpw.mods.fml.common.LoaderException being thrown.

This person's problem seemed similar on its face, but mine appears to be a problem with the server running properly whereas theirs was a problem with mods loading after the server itself initialized:


I don't really know enough about the internal function of forge/fml to be able to tell what is wrong beyond a java exception in the server initialization process.

Thank you for reading! Any insights or help would be greaty appreciated! ^^


Jan 29, 2015
How do I find this discord server? Please post it here.
You need to join the FTB discord if you haven't already - there is an infinity-evolved channel in there, which has pins.

This link may or may not work for you, depending on if you've joined the FTB discord or not.



Active Member
Dec 15, 2019
Fix and info for FTB Infinity Evolved Skyblock v2.0.1 on the FTB App (user/server). You might encounter a bug during "Initializing mods Phase 3" where it stops at "5/7" during "Post Initialization - Ex Compressum". Users: you have two options to solve this, choose only one: Option 1: In the /mods folder, you need to replace the old excompressum-mc1.7.10-1.1.149.jar with the newer excompressum-mc1.7.10-1.2.0.jar found on CurseForge ( Don't forget to delete the old file and leave only the newer version. Option 2: In the /config folder, locate and edit the file excompressum.cfg with a text editor and change to true in the following line: B:"Skip Auto Sieve Skins"=false becomes B:"Skip Auto Sieve Skins"=true. Both fixes will require you to navigate in the files: reach the modpack page, click "Settings", then click "Open Folder". That's all for the user part. Server operators (v2.0.1): You need to apply one of the above options to your server as well, and tell your players about which fix you chose. Additionally, you will need to remove those clientside only mods from your server's /mods folder: CustomMainMenu-MC1.7.10-1.9.2.jar, Lockdown-1.7.2-2.0.0-universal.jar, ResourceLoader-MC1.7.10-1.3.jar. Don't forget to make the server use Java 8 if you happen to encounter an error mentioning java.base/jdk.internal in the crash. Some information for island management is found at or by using in-game commands. Creating an island (ops only) /island_create Steve. Joining an island (user) /island_join Steve. Name the islands after the player names. That's all for healthy servers.

For those in the far future returning to the tree of knowledge...
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