Sprites plugin: don't crash on missing sprite dir
Sprites plugin: don't crash on missing sprite dir

koenbok/Cactus,chaudum/Cactus,koobs/Cactus,danielmorosan/Cactus,ibarria0/Cactus,PegasusWang/Cactus,Bluetide/Cactus,koenbok/Cactus,dreadatour/Cactus,juvham/Cactus,Knownly/Cactus,eudicots/Cactus,dreadatour/Cactus,fjxhkj/Cactus,andyzsf/Cactus-,koobs/Cactus,danielmorosan/Cactus,chaudum/Cactus,Bluetide/Cactus,koobs/Cactus,chaudum/Cactus,dreadatour/Cactus,page-io/Cactus,danielmorosan/Cactus,andyzsf/Cactus-,PegasusWang/Cactus,Knownly/Cactus,Bluetide/Cactus,eudicots/Cactus,fjxhkj/Cactus,fjxhkj/Cactus,Knownly/Cactus,page-io/Cactus,koenbok/Cactus,page-io/Cactus,juvham/Cactus,juvham/Cactus,eudicots/Cactus,andyzsf/Cactus-,ibarria0/Cactus,ibarria0/Cactus,PegasusWang/Cactus