Merger Issues All of a Sudden?!

[Volvic1974]

Hi All. Been using DFL now for a few years and made hundreds of videos with no issues at all until now...

Every feature and program works as it should within the DFL folder, image extraction/face extraction/training (xseg and SAEHD) all performing fine with no errors. My issue seems to be in the final stage of merging.

The last 3 attempts I have made to merge a video have thrown up this error during merging (see image). I tend to input some standard settings in the dos box for the merger settings and set it going keeping a finger on the arrow until I need to change some settings based on what I see in the interactive merger preview window - Ive always done it this way with no issues. I get some way through merging the whole project and all of a sudden it hits a particular point where it gives this error and continues to give the error for every frame afterwards whilst you are keeping your finger on the 'next' arrow trying to merge the remainder. The interactive merger window freezes and the green egg-timer symbol remains static in the top left corner of the screen.

I have tried just deleting everything and starting again - same issue. Can someone decipher the error code and give me an idea as to what might be happening? It's odd that its started happening all of a sudden... I've done this for years with zero issues. Ive tried updating my graphics and display drivers an that didnt help.

Look forward to any input.
Thanks