Issue with ApplyMask

[BReeves]

This may be frutle but thought I would try. Having a random problem with loading a bitmap into VLApplyMask and displaying it using VLDSImageDisplay. My configuration is as follows.

VLDSCapture->VLMirror->VLApplyMask->VLGenericFilter->VLDraw->VLDSImageDisplay

I am changing the mask image then capturing a bitmap with VLGenericFilter. Fairly straight forward code..

Code:

if(DoingOverlay) {
            sprintf(backfile, "%s%02d%d.bmp", GrabForm->BorderPath, GrabForm->BorderNumber,ShotCount);
            VLApplyMask1->Picture->LoadFromFile(backfile); // this is where it barfs
        }
        //Have Delay here as I am using a timer to cycle through 4 shots
       VLGenericFilter1->Enabled = true; // Grab the frame

The attached image shows what happens and it's random, sometimes it works great but mostly it barfs. I had the issue with VideoLab 4.5 and upgrading to 5.0.1 didn't fix it. Hoping looking at the image will give you a hint as what is going on and if I can do anything to fix it. I know it's old but I'm stuck with it and have to make it work.