Same here, live tv works and I've done nothing but video won't play without crashing. For now I'm using Media Player Classic and Plex to play recordings
I didn't expect live tv to work as the HDHR W10 App does not.
I hear MS expects a fix tomorrow but who knows.
Custom ASUS P8Z77 V-Deluxe, Core i7 3770k, 16 GB Memory-ASUS ENGTX560 DCII TOP/2DI/1GD5 GeForce GTX 560, H80i Cooler, 750W PS, CM HAF XM RC-922XM-KKN1 case,Corsair GS CSSD-F240GBGS-BK 2.5" 500 SATA III SSD, HDHomerun Prime & Extend Tuners- running Windows 10 (and other goodies)
#2--P877WS- Core i7 3770k, 16GB Memory-GeForce GTX 650Ti, SATA III SSD, H100i cooler, 750W PS, Windows 10