issues exporting gif

[kaceym5570990]

It keeps on adding these stupid white lines???

I made sure to turn frame disposal on. It doesn't look like this in the 'original' tab

???????

[JJMack]

GIF supports 256 map colors when the is no transparency.  When the is transparency 255 colors and transparent.  Pixel are either fully a color or empty.  Your RGB image has pixels the opacity is less then 100% and not than 0%  so those pixels are dithered to try to create a lower opacity effect.  You low opacity yellow  pixels become white during that process.  Look at the mapped colors in your screen capture