v2.2

After some trial and error, I have compiled this new version which removes the possibility of the Camera Busy error appearing. Previously, if you left the camera alone for some period of time (usually a few minutes), the camera would go into a state which required a driver command to wake it up.

What this meant was if it went into this state and you went to take an exposure, you would receive a busy error and your exposure would fail. Now, the driver sees this error and simply waits a moment, taking the exposure just after the error gets thrown. You'll now not even see the Busy error appear, and your command will be executed by the driver, intelligently handling the error in the background.

The older v2.0 version will still function, but this Busy error may be thrown at times. Given the 2.2 error exhibits no instability I can see, I would recommend replacing your current version with this new one.