I've found another cryo-volcanic planet that has the same issue
If its super likely to be anything other than a faction mod possibly, it would be Secrets Of The Frontier which hasn't been released on the forums yet so if it is clashing then I wouldn't be surprised. Otherwise as far as I know other mods I have installed shouldn't change/effect or create new types of planets. Whats really odd is the fact that the previous planet I was allowed to make a sling on it, but this new one I'm not allowed to that, despite it being as far as I can tell, the exact same planet type.
And something to note is that its a little odd that we're able to make Solar shades and stellar mirrors without a spaceport first, Convenient, but 'logically' its weird. I know in effect without a space port they wouldn't likely get the imports needed to work, but its just something to note.
does the terraforming device work on any planet or just ones recognized by the mod? I'm just curious to know if this might be somehow remediable in its current state until the next update.
Edit:
Found another odd one! Planet isn't hot, only negative condition it has (after I had cleared the decivilized sub population) was extreme tectonic plates