In the 4.2.1 patch release we have completed minor fixes to various features based on reported issues from 4.2
- PTZ Presets failing to load for particular camera profiles
- Video recording sometimes fails (seems to be dependent on the frame rate of the camera and the duration of the recording)
- The RTSP field is sometimes disabled on the edit camera screen for profiles that require custom values
The official release date is May 25th.