EosException Device Busy

[Bamboozled]

Hi all,
I did have this system working nicely - both the demonstration "Cockpit" and my own app using the framework. Thanks so much to Esskar.
However, this morning my own app (simply provides a command line interface to take a photo) is not working - the camera sounds like it is taking a photo, but no photo is stored either on the camera or on the pc.
I then tried using the Cockpit test again and got the following error:

Failed to take a picture.
Canon.Eos.Framework.EosException: Device Busy.
Failed to take picture at Canon.Eos.Framework.Helper.Util.Assert(U1nt32 result String message) in D:\esskar-Canon.Eos.Framework-Oaacd29\Canon.Eos.Framework\Helper\Util.cs:line 28 at Canon.Eos.Framework.EosCamera.TakePicture() in D:\esskar-Canon.Eos.Framework-Oaacd29\Canon.Eos.Framework\EosCamera.cs:line 475 at Canon.Eos.CameraCockpit.Forms.CockpitForm.< HandleTakePictureButtonClick> b_0() in D:\esskar-Canon.Eos.Framework-Oaacd29\Canon.Eos.CameraCockpit\Forms\CockpitForm.cs:line99 at Canon.Eos.CameraCockpit.Forms.CockpitForm.SafeCalI(Action action, Action]. exceptionHandler) in D:\esskar-Canon,Eos.Framewok-Oaacd29\Canon.Ecs.CameraCockpit\Forms\CockpitForm.cs: Iine 154

As I said, it was working. What have I changed? Any suggestions would be welcome.

[Bamboozled]

Looks like I managed to accidentally sabotage the system: In my own app I had accidentally left in a "camera.SavePictuersToHost(path)" just before camera.TakePicture(). As discussed in issue #11, this causes problems for cmd line programs.
Interestingly, this seemed to get the camera sufficiently confused that the demonstration Cockpit also didn't work.

[vrnew]

I used "camera.SavePictuersToHost(path)" before camera.TakePicture(), and got the same error.
Canon.Eos.Framework.EosException: Device Busy.
Failed to lock camera.
at Canon.Eos.Framework.Helper.Util.Assert(U1nt32 result String message) in D:\esskar-Canon.Eos.Framework-Oaacd29\Canon.Eos.Framework\Helper\Util.cs:line 28 at Canon.Eos.Framework.EosCamera.Lock() in D:\esskar-Canon.Eos.Framework-Oaacd29\Canon.Eos.Framework\EosCamera.cs:line 475 at Canon.Eos.CameraCockpit.Forms.CockpitForm.< HandleTakePictureButtonClick> b_0() in D:\esskar-Canon.Eos.Framework-Oaacd29\Canon.Eos.CameraCockpit\Forms\CockpitForm.cs:line99 at Canon.Eos.CameraCockpit.Forms.CockpitForm.SafeCalI(Action action, Action]. exceptionHandler) in D:\esskar-Canon,Eos.Framewok-Oaacd29\Canon.Ecs.CameraCockpit\Forms\CockpitForm.cs: Iine 154

[vrnew]

I used the winform exmaple, cockpitform.

[vrnew]

Sometimes it worked, and sometimes it got the error.