I went to enlarge the spectre dimension with ectoplasm by right clicking a stack on the core, but it crashed with this error

https://paste.dimdev.org/hudabidena.mccrash

Turns out a glowball from Tinker's Construct had been placed on the core by a tinker's item that places them in dark areas. Anyway, it also seems that right clicking on any placed glowball, not just in the spectre dim on the core, with ectoplasm, will cause the same crash.

https://paste.dimdev.org/zumuvukusi.mccrash

This is on a server running a custom modpack, only the client crashes.