Hi!
I'm not sure what's happening, I've added this mod to my modpack, and when I was play testing it I've tried to enter the portal to the prisoners' quarters and when the dimension loads it just spawns me into a wall; the dungeon/dimension doesn't load at all.
I'm not sure if I'm doing something wrong, or if it's a mod conflict, but I'm hoping someone else has encountered this!

It's likely because you have Sparse Structures installed.

Add these lines to the config file's customSpreadFactors array, directly blow the mansion entry:

{
  "structure": "minecells:black_bridge",
  "factor": 1
},
{
  "structure": "minecells:insufferable_crypt",
  "factor": 1
},
{
  "structure": "minecells:prison",
  "factor": 1
},
{
  "structure": "minecells:promenade",
  "factor": 1
},
{
  "structure": "minecells:promenade_wall_x",
  "factor": 1
},
{
  "structure": "minecells:promenade_wall_z",
  "factor": 1
},
{
  "structure": "minecells:ramparts",
  "factor": 1
},
{
  "structure": "minecells:ramparts_second",
  "factor": 1
}

I have a workaround for this issue ready for the next major release, so stay tuned for that, too

Can you verify if this is happening on other MC versions?

@Sunconure11 I believe yes, the way Sparse Structures does its thing has always been incompatible with Mine Cells, unfortunately.

If you're playing on 1.19.2 though, this should be used in the config instead of the above.

{
  "structure": "minecells:insufferable_crypt",
  "factor": 1
},
{
  "structure": "minecells:prison",
  "factor": 1
},
{
  "structure": "minecells:promenade_overground",
  "factor": 1
},
{
  "structure": "minecells:promenade_pit",
  "factor": 1
},
{
  "structure": "minecells:promenade_spawn",
  "factor": 1
},
{
  "structure": "minecells:promenade_underground",
  "factor": 1
},
{
  "structure": "minecells:promenade_wall_x",
  "factor": 1
},
{
  "structure": "minecells:promenade_wall_z",
  "factor": 1
}

Promenade used to be a few different structures types internally in 1.19.2, and now it's just one.

This issue should not be happening anymore as of Mine Cells 1.7.3 and newer, so you probably won't need to configure anything for the most recent versions of the mod