I reported this problem to them directly via email and they gave me some instructions to follow involving reforming a posse with just me in then setting down camp, this also does NOT work and I've let them know too.
This bug for me is a game breaker and I won't be playing online until it is resolved. Instead of bringing out new content they should be resolving the existing bugs first and foremost. The $2 setup cost is also stupid for the camp. Especially when it only lasts for 5 mins then Cripps packs it up again