Event Mail without screenshot

Hi all,
i am new to bluecherry and hope for help.

I configured SMTP to receive Mails for events. But why i cannot see the screenshot?
I see a lot of errors in the logs but live view and recording works.
Can anybody give me a hint?

Here are my logs:
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Last message repeated 7 times!
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Decoding failed for motion processor
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Last message repeated 1 times!
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Likely timestamping error. Ignoring.
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Decoding failed for motion processor
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Likely timestamping error. Ignoring.
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Decoding failed for motion processor
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Likely timestamping error. Ignoring.
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Decoding failed for motion processor
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Likely timestamping error. Ignoring.
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Last message repeated 1 times!
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Decoding failed for motion processor
Dec 2 22:34:45 dvrip2 bc-server[727]: W(2/Front): Likely timestamping error. Ignoring.
Dec 2 22:34:46 dvrip2 bc-server[727]: I(2/Front): Last message repeated 1 times!
Dec 2 22:34:46 dvrip2 bc-server[727]: I(2/Front): Motion detected
Dec 2 22:34:46 dvrip2 bc-server[727]: E(2/Front): Error writing frame to recording: Invalid argument
Dec 2 22:34:46 dvrip2 bc-server[727]: E(2/Front): Failure in recording writing
Dec 2 22:34:46 dvrip2 bc-server[727]: E(2/Front): Error writing frame to recording: Invalid argument
Dec 2 22:34:46 dvrip2 bc-server[727]: E(2/Front): Failure in recording writing
Dec 2 22:35:58 dvrip2 bc-server[727]: E(2/Front): Read error from stream: End of file
Dec 2 22:36:00 dvrip2 bc-server[727]: I(2/Front): Stream started: Video: h264 (Main), yuv420p(progressive), 1920x1080, 1/90000(s) 1/180000(c)
Dec 2 22:36:00 dvrip2 bc-server[727]: W(2/Front): Failed to initialize VAAPI decoder for stream
Dec 2 22:36:36 dvrip2 bc-server[727]: E(2/Front): Read error from stream: End of file
Dec 2 22:36:37 dvrip2 bc-server[727]: I(2/Front): Stream started: Video: h264 (Main), yuv420p(progressive), 1920x1080, 1/90000(s) 1/180000(c)
Dec 2 22:36:37 dvrip2 bc-server[727]: W(2/Front): Failed to initialize VAAPI decoder for stream
Dec 2 22:36:50 dvrip2 bc-server[727]: I(2/Front): Applying configuration changes
Dec 2 22:36:51 dvrip2 bc-server[727]: I(2/Front): Device stopped: configuration changed
Dec 2 22:36:57 dvrip2 bc-server[727]: I(2/Front): Setting up device
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): Stream started: Video: h264 (Main), yuv420p(progressive), 1920x1080, 1/90000(s) 1/180000(c)
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): Switching to new recording schedule ‘motion’
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): motion algorithm is set to 1
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): frame downscale factor is set to 0.500000
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): min_motion_area_percent is set to 5
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): max_motion_area_percent is set to 90
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): max_motion_frames is set to 20
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): min_motion_frames is set to 15
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): motion_blend_radio is set to 15:1
Dec 2 22:36:59 dvrip2 bc-server[727]: I(2/Front): motion_debug is set to 0
Dec 2 22:36:59 dvrip2 bc-server[727]: W(2/Front): Failed to initialize VAAPI decoder for stream
Dec 2 22:40:07 dvrip2 bc-server[727]: W(2/Front): Likely timestamping error. Ignoring.
Dec 2 22:45:37 dvrip2 bc-server[727]: I(): License is genuinely activated
Dec 2 22:45:37 dvrip2 bc-server[727]: I(): Genuine Days left: unlimited

In the Playbackoptions i see three events at 22:34