Pack Version:
1.2.2.1

Description:
Electrolyser (molecular disintegrator) at EV has the same name as the one at UV (E-4908).

Expected Behavior:
I assume the EV one should be named E-4904 since the others all increment by 1 when you go up a tier.

Would I need to download something to get the fixed version?

You would need to update to the Development version of Nomifactory, which has about two years worth of updates from 1.2.2.1
See here for information: https://github.com/Nomifactory/Guides/blob/latest/guides/PlayingOnDev.md

Thanks!

I'm reasonably sure that this is corrected already as we ultimately had to bansoukou patch the lang files to override the original naming scheme (which was done in 09edf06).