[puenktchen]

Your log clearly states that the addon cannot access your timeshift share:

Code:

17:08:26 T:8528 NOTICE: AddOnLog: MediaPortal PVR Client: Cannot access 'D:\MediaPortal\Timeshifting\live3-0.ts.tsbuffer' directly. Assuming multiseat mode. Need to translate to UNC filename. 17:08:26 T:8528 NOTICE: AddOnLog: MediaPortal PVR Client: Translate path D:\MediaPortal\Timeshifting\live3-0.ts.tsbuffer -> smb://KOLBNET-SERVER1/Timeshifting/live3-0.ts.tsbuffer 17:08:26 T:8528 ERROR: AddOnLog: MediaPortal PVR Client: Cannot find or access file: smb://KOLBNET-SERVER1/Timeshifting/live3-0.ts.tsbuffer. Check share access rights.

Recheck your addon settings, share permissions and try to use the server ip instead of the hostname.