Thanks Dafydd,
Ok, managed to close PD8 down following your instructions re PDR8.exe.
Then the ONLY way I can open the troublesome (or any) video is to go to the PDS file and open it from there.
Having done that two videos STILL STOPPED at the first transition. So I set the transition to 4 secs and it worked ok but stopped (hung) at the next transition. ie just the same as before. This is with newly downloaded PD8 software.
Sorry, but there is no change.
Phil
Tell the truth - but gently.
PD14 Ultra
i5-6600K OC CPU, Asus Z170-P Motherboard, 4G Asus GeForce GTX 960, 240GB SSD, 1 x 1TB Seagate HDD, 1x 1TB SSD external backup HDD, 8GB RAM