Garry2

Just finished a top end rebuild on my 1995 camry (5s-fe) and went to start it all up again and it cranked but there was no spark. There is a new distributor on the car however I forgot to plug in one of the plugs to it when first turning the engine over could this have done damage? What things should I be double checking to make sure I haven’t missed anything that could cause this no spark issue. cheers