Wait for the primer to dry (about 30 minutes) and re-sand with 150 grit paper. Do not resand the primer off to the point you will see the wood grain. Just provide a light sanding to remove any blistering or bubbles from the primer. You may see the wood through the primer, this is ok.
Before painting the deck, again wipe extra primer dust from the deck with a damp cloth and again wait fifteen minutes before painting.
Shake the aerosol primer can for at least two full minutes. Hold the can about ten inches away from the deck and spray very lightly until the paint covers the entire surface. Aerosol cans cause drips and bubbles so if this occurs, wait for drying and resanding, do not overpaint or try to fix wet paint.