Im working on a project in after effects and when I switch a layer's visibility off and then try to turn it on again the layer remains hidden. The eye symbol is there but is not fully lit up. I'm really confused as to why its doing this, please help if you can!
Looks like one or more of your layers may have the "solo" switch enabled (the circular switch between the audio and lock switches).
The Solo switch is used so that only the soloed layers are displayed, effectively overriding the visibility switches for other layers, until the solo switch is turned off again for layers which have it enabled.
For more information, see Solo a layer in After Effects Help.
Adolfo Rozenfeld · Adobe