ConvertXtoDVD - Picture Problem with mkv Files

Hello everybody,

I’ve looked everywhere for a solution to my problem with ConvertXtoDVD with no luck, so wondered if anyone here might be able to help me out. I can burn mkv files with hard subs fine, but when I try and burn an mkv with one audio track and one sub track both the preview and the finished result look like this:

I’ve updated to the latest version and still have the problem. If you need any more info I’ll be happy to give it, I freely admit I don’t have a lot of technical knowledge. Any help would be much appreciated.