With the last few versions of QF I've been getting problems with platforms. Namely:
1. Attempting to request buildables to the platform results in: https://ibb.co/HZWNnTp
2. Opening the storage while in platform view (engineer still on the planet below): https://ibb.co/1JjLrPwr

Looks like rocket_silo.get_recipe().product is null so we can't index it. Unfortunately that's as much as I can infer without going deeper into factorio APIs.

Thank you for the wonderful mod!

Please upload your save somewhere, seems like some mod interaction.

Sure thing, I've a got a few other mods, which I also suspected to be involved. Here's a link to my save where I got the first platform up and started planning: https://limewire.com/d/TgSQV#iix0V6zSP5

You should be able to TAB onto the station and try opening the storage UI which should cause the error from point 2 above.

Initially I thought maybe Krastorio Spaced Out was the problem. However, I loaded another save from a few months ago where I also had mods and had no issues, it also resulted in an error on my platforms. I might've accidentally carried over something extra but made sure KSO was not one.

Ah I see, I wondered how it would be possible for a silo to have a recipe w/o products. Turns out the Quality rocket parts mod removed the products of the rocket part recipe to remove the output slot in rocket silos.

I added a check to add them back, should work now.

Ahhh it was the quality rocket parts! Should've audited my mods list a bit more thoroughly.

Just updated and the run is saved, thank you!