I take it that it reads the CR2 (or whatever) to find references to the external geometry, textures, etc. which it will delete? What if it's a Posette character, for instance? Will it zap the P4NudeWom.obj file, rendering all other Posette characters unusable unless you restore the file manually? It might be a good idea to include a "Do not delete geometry" option for those Poser-critical files.