https://gist.github.com/JAWSAWN/169f13e1b9de52adc8a6c81865b9e7f7

I can run 1.0 fine but 1.1 crashes.

I get a crash too http://pastebin.com/H6naRZCP

I also get a crash at startup. Different log, but it may be related.
https://gist.github.com/jojotastic777/a635164455c369807f76c5e3ae893273
Ninja Edit: In fact, I have the same error as @Hypsellis.

@jawsawn @Hypsellis @jojotastic777 can you guys remove waila and TOP from your mod folders are try again please?

@jawsawn your specific crash was probably 90% possibly fixed.

Oh it's top crashing the mod. Looking into it.

@LordSaad44 How it got fixed? On the next version?

I'm having the same issue - or at least I think it's the same issue, the error message seems to be the same.

Server log
Minecraft crash report

I'm playing the All The Mods modpack (version 1.46) with a few added mods:

• Nature's Compass
• Login Shield
• Literal Ascension (+ LLibrary + Forgelin dependencies)
• Akashic Tome
• Refraction (+ LibrarianLib dependency)
• Dynamic Surroundings Unofficial
• Sound Filters + Sound Cap
• Neat
• Optifine
• Removed: Infernal Mobs

Removing Refraction allows me to start up my server and client just fine.
Let me know if you need more information :)

At this point we have confirmed that it is The One Probe that is causing the issue. We are currently looking into it, as it is the one biggest bug we have at the moment.

FIXED. Liblib has removed TOP and waila support (a custom special implementation) that was crashing it. Fix will be in the next release.