Shader error in ... : Syntax error at line 30

I created a custom shader in which I use the command

#include "../cginc/CustomParallax.cginc"

right after the CGPROGRAM directive, but once I click save and compile the shader, it gives me this weird error, while if I remove that line, it works perfectly and it compiles my shader. Could someone explain me what’s wrong with this statement?

Thanks, this error is driving me mad >.<

You might want to provide the full path in your include like:

#include "Asset/Path/cginc/CustomParallax.cginc"

Since looks like the …/is causing the error.