Single Kelight Frame Black Error

[Lokister]

Hi everyone I think I am having a bug which I had fixed in the past in another comp but can't seem to do it here and not sure if I remeber correctly how I fixed it last time. 

The problem is after keylight 1.2 applied and tuned there is a random black frame applied to the keylight clip. I thought it might be the black and white matte settings but altering those doesn't get rid of it. It's only one frame out of hundreds. Any clues appreciated that's so much.

[Rick Gerard · Accepted solution]

That problem is most likely a cache problem. Try purging all memory and disk cache in the Edit menu.

[Lokister]

Sounds like a good idea. Thanks Rick! I will try once my power is restored ;-( and update then

[Lokister]

I purged new drive location memory and cache which didn't do it but I decided to purge the previously used storage area of User Temp folder in case it had residual files and that seemed to do the trick. Thanks for pointing me in the right direction.