The same happened to me while using the same spray paint. It happens when you spray too thick a coat on. With that stuff you really have to just give very very light coats at a time.
I spent 3 months scraping and sanding my case down to spray it again after it happened to me, really kills any motivation to get it finished!
I spent 3 months scraping and sanding my case down to spray it again after it happened to me, really kills any motivation to get it finished!