Shaders

Hello. I'm in the middle of a project on Articulate Storyline 2 and something really strange has happened that I can't figure out. I have a slide with over 50 layers in it with each one having a shader covering a background picture. Yesterday they were working just fine but now none of them are showing when I preview the slide. I have them placed correctly in the timeline and made sure that they were not hidden. They show up when I am working on each layer, but when I go into preview mode they are no longer there. When I tried to adjust the transparency of the rectangle shape to 0% it was still transparent. Obviously whenever I normally have the transparency set to 0% it is a solid color rectangle. I know I should probably just make a new shader and apply it to the layers but this would take a lot of time since I have a lot of transitions and animations which affect the shader. Any help would be appreciated.