That's odd, guys. I brought a big group of Sims to the temple and they placed two tents outside, plus one inside the temple, and when they had finished raiding it, they were able to pack everything up and take it back with them. But they did buy all of their supplies in Salvadorada, they didn't bring any camping stuff from another world. Could that be the problem, maybe? Perhaps the jungle glitches if you try to use supplies that were not bought in the same map?
Also, have you tried repairing the game? I do a repair every time I download a new pack, just in case it tweaks something.