I'll second the question about what it is. Do you know it is paint? Do you know if it's a 2 part paint or a single part paint? What are you painting over it?
IIRC, if you are painting with a 2 part paint you have to have a 2 part paint under it (or gelcoat) if you are painting with a single part paint, you can have a single or a 2 part or gelcoat under it.