All Poser files have a line which indicates where the object file is stored on the system. It looks like this:

figureResFile :Runtime:Geometries:unrealBlue:Gymnastic Slippers.obj (in a CR2)

or this:

objFileGeom 0 0 :Runtime:Geometries:Glitterati:LaFemme:Gi_Poet:gi_lflhpoethat.obj (in a prop file)

the same it true for texture files with their own path.

All of these files can return an error if the files are not in the proper place and Poser can't find it when pointed in those lines.

The solution is to open the file, look at the location and move the files to the proper location. Or change the location to the place where they are actually found.