Hi,

I'm trying this out for the first time and it seems that I cannot use the "Upgrade" button to replace the existing belts (e.g. Express) with the "Ultra fast" one. I get the same problem with the splitters.

It does work, however, with the loaders and the stacking beltboxes.

I can place them manually, and they appear to work once placed, but I was hoping to use the "bulk upgrade" technique, as the base is pretty complicated now. :)

Hey, thanks for pointing this out!
I know it's been a while since you posted this, I've just been busy and haven't touched factorio in a good month or so now.
Anyways, I should have a patch out in the next hour or so now.

Thanks. I'll try it out on the next game