I bought this today, and I am starting to regret it after hitting this roadblock. I started playing a rover career, but when I get to the small rover, it always gets banged up during chute deployment, and freefalls a few hundred meters to certain doom. I have tried different constructions, including one camera and one battery, but wrecks every time. I have tried testing the small rover in the yard, and it slumps to the ground like a wet noodle. This all seems like some inherent physics blip. I have now spent two hours checking, and re-checking every combo I can think of. What a drag.
*** UPDATE ***
I backed out to "Scenarios," and ran the Sojourner mission. It deployed normally. I drove around a bit, then went back to my career. By the time I progressed to the small rover again, the first one deployed normally, without the collisions and balloon panels flying off and freefall death.