Comp and Layer Panels Don't Match

[jimlolo]

i have a project that I reduced to 1 layer. When I show that layer's track panel and the final composition panel side by side, there is an extra drop and a faint horizontal white line at the bottom left of the composition panel. Those are not seen in the layer panel. How can that be for a composition that only has 1 layer?

Btw, that layer has a bunch of paint strokes, clones, and erasers, and a mask.

Thanks.

[Byron Cortez]

You have a Layer (which is a .mov video) at 400% display size (Magnification ratio popup) where you also have an inverted mask, maybe that line is part of your video but you don't see it in the Layer panel because the display size is there to 100%.

[jimlolo]

no, not it. I've zoomd in and out and nada.

[Rick Gerard]

Your screenshot is leaving out a lot of information. Show both the switches and modes column in the timeline and show all modified effects. Your Footage panel is rendering only Paint 3. The footage panel can only render one thing at a time. The comp panel shows the magnified paint stroke, a subtraction mask, and a few visible pixels that approach white. We have no idea what you are trying to accomplish or what is going on in the layer.  You have also not told us what you expect to be seeing or doing to the layer. 

[jimlolo]

Ah hah! I didn't see the panel only shows Paint 3. Now I can access what I need with that setting on Paint 1. All I wanted to do was edit that white splotch in 1 frame but couldn't get it in a panel to edit.

Thanks.