Failed to load mods: Error while loading entity prototype "electric-transmission-tower" (electric-pole): maximum_wire_distance must be <= 64

Oh, hmm... Never realised there was a hard limit on that. Guess I need to remove the wire distance setting, then. If the game won't support wires longer than the default, then that option is pointless. Will investigate.

For the time being, though: Have you set wire distance to anything other than 64? Do you have any mods which change wire distance on electric poles?

Well, either way - removed the wire distance setting. Now always 64. I suspect you may have changed wire distance and put yourself in a broken state. My apologies. The new version of the mod no longer stores that value, so it should work even if you'd previously changed wire distance.

tl;dr fixed 1.0.1

There has to be a way around it as quality allows wire distance to be above 64, but good to know for now it is fixed.

I'm honestly not sure how Quality works, though I'll bet it's a runtime modifier of some sort - similar to Beacons. Unfortunately, there's nothing I can do at the prototype stage, as any value over 64 throws a compilation error, as you saw.