Yes, I agree my original post concerned the ASCOM driver. However, now I've had a similar kind of issue using the regular ATIK driver in PHD2 where just trying to disconnect the camera from the software caused a major lockup of PHD2 and the camera would not run again unless I rebooted.
In any case here is the ASCOM driver info:
21:33:04.520 FileDetails C:\Program Files (x86)\Common Files\ASCOM\Camera\Atik\ASCOM.Atik.Camera.dll
21:33:04.521 FileDetails Assembly Version: ASCOM.Atik.Camera, Version=7.0.1.38454, Culture=neutral, PublicKeyToken=null
21:33:04.521 FileDetails Assembly Framework: v4.0.30319
21:33:04.522 FileDetails File Version: 7.0.1.38454
21:33:04.522 FileDetails Product Version: 7.0.1.38454
21:33:04.522 FileDetails Description: Atik Camera Driver
21:33:04.522 FileDetails Company Name: Atik Cameras
21:33:04.522 FileDetails Last Write Time: 5/06/2016 10:21:50 PM
21:33:04.522 FileDetails Creation Time: 5/02/2015 10:23:31 AM
21:33:04.522 FileDetails File Length: 92,160
21:33:04.522 FileDetails Attributes: Archive
21:33:04.522 FileDetails .NET Assembly: True
21:33:04.522 FileDetails Bitness: Bits32
21:33:04.522 FileDetails Subsystem: WINDOWS_CUI
21:33:04.522
21:33:04.523 FileDetails C:\Program Files (x86)\Common Files\ASCOM\Camera\Atik\ASCOM.Atik.Server.exe
21:33:04.524 FileDetails Assembly Version: ASCOM.Atik.Server, Version=7.0.1.38454, Culture=neutral, PublicKeyToken=null
21:33:04.524 FileDetails Assembly Framework: v4.0.30319
21:33:04.524 FileDetails File Version: 7.0.1.38454
21:33:04.524 FileDetails Product Version: 7.0.1.38454
21:33:04.524 FileDetails Description: ASCOM Atik server
21:33:04.524 FileDetails Company Name: ASCOM Initiative
21:33:04.524 FileDetails Last Write Time: 5/06/2016 10:21:48 PM
21:33:04.524 FileDetails Creation Time: 5/02/2015 10:23:31 AM
21:33:04.524 FileDetails File Length: 26,624
21:33:04.524 FileDetails Attributes: Archive
21:33:04.525 FileDetails .NET Assembly: True
21:33:04.525 FileDetails Bitness: Bits32
21:33:04.525 FileDetails Subsystem: WINDOWS_GUI
21:33:04.525
21:33:04.525 FileDetails C:\Program Files (x86)\Common Files\ASCOM\Camera\Atik\ASCOM.Atik2.Camera.dll
21:33:04.526 FileDetails Assembly Version: ASCOM.Atik2.Camera, Version=7.0.1.38454, Culture=neutral, PublicKeyToken=null
21:33:04.526 FileDetails Assembly Framework: v4.0.30319
21:33:04.527 FileDetails File Version: 7.0.1.38454
21:33:04.527 FileDetails Product Version: 7.0.1.38454
21:33:04.527 FileDetails Description: Atik Camera Driver 2
21:33:04.527 FileDetails Company Name: Atik Cameras
21:33:04.527 FileDetails Last Write Time: 5/06/2016 10:21:48 PM
21:33:04.527 FileDetails Creation Time: 5/02/2015 10:23:31 AM
21:33:04.527 FileDetails File Length: 92,160
21:33:04.527 FileDetails Attributes: Archive
21:33:04.527 FileDetails .NET Assembly: True
21:33:04.527 FileDetails Bitness: Bits32
21:33:04.527 FileDetails Subsystem: WINDOWS_CUI