OK just to (politely) weigh-in on this.
Tamiya Plastic Primer in a Rattle-Can:
I use it all the time and never have had a single issue with it. Shake for around twenty-to-thirty seconds, keep shaking between passes. Passes around fifteen-to-twenty cms from the target in (best described), in broad swathes, press the 'tit' before you arrive at the target to avoid 'build-up' and 'lumps'. Settles into a satin finish and touch dry in ten mins. Ready to gently sand back with Auto Finishing grade wet'n dry paper the following day. Always use lots of water.
To my eye, (and Swordsman already mentioned it), Bob, you were too close, just let it 'go off' for a day and gently sand it back. Try the 'broad swathes' approach it should work for you. Safety Note:I always spray in the open air, this stuff will knock you on your a*se if you try to apply it indoors, and the particles will attach themselves to everyting.
HTH
Ian.