Crash on using the machine assembler

[roidrole]

Steps to reproduce:

• Create a world
• Place a machine controller (I used the default assembly line controller and a custom multiblock confirmed to be buildable normally)
• Right-Click it with a machine assembler

Installed mods:

• Cleanroom 0.5.7 (including MixinBooter 10.6 and ConfigAnytime 3.0)
• CraftTweaker 1.12-4.1.20.711
• Fugue 0.23.4
• Had Enough Items 4.23.0
• Modular Machinery Addons 1.2.4
• Modular Machinery: Community Edition 2.3.2
• Scalar Legacy 1.0.0

All configs are default values

See Latest.log

Note that this crash doesn't exit the game, but makes the machine assembler unusable and logs the crash report

[Alecsioo]

Just making sure, the mods you mentioned are the only ones installed on your instance, right?
You're not playing with other mods (like nuclearcraft, thaumcraft, ...)

[roidrole]

Those are the only mods in my instance, correct