[nathan_hui]

OP's problem indicates SW isn't able to recognize that the sldprt files linked in the sldasm are part of the model. He says he's able to open them from the Feature Manager, which says SW knows which file is which, but the assembly view shows nothing, and all the parts are permanently suppressed, and saying that the original files can't be accessed. The files are all where they're supposed to be - sldasm and sldprt in the same directory. SW appears to be really confused about the sldprt files in the directory. To me, this says SW either has some really screwed up settings or the installation is corrupted, since this is common across multiple step files (so isn't limited to a single file being corrupted, unless every single step file he touches is corrupted, which is unlikely, yet possible).