MoveIt Baxter no motion plan found error

Hi, I'm using MoveIt to plan and execute motion on the Baxter robot arms for teleoperation purposes in indigo. I'm using the `python` interface and the `MoveGroupCommander` to specify positions. I've tried both the `group.set_pose_target()` and `group.compute_cartesian_path` methods but they give the same error of `No motion plan found` and `Unable to sample any valid states for goal tree`. Initially I set the arm to an initial position, using manual joint positions and `group.set_joint_value_target()` works fine to move the arm to the position. But after this, any changes in pose using the above methods for some reason moves the arm to a fully outstretched position after which it no longer moves. I know the pose is valid because I set it manually using Rviz. I'm only incrementing it by 0.01 for the next position yet it still fails. Other people have encountered this problem [before](https://groups.google.com/forum/#!topic/moveit-users/uMG3hZYhYbw) but there, the arms were of a too low DOF apparently. Any help would be appreciated