First--check to see if they're there.  Go to the material room, and select them from item menu. Then make sure they are selected, and look at the figure Properties tab and make sure visibility is checked.

If all the above look good, do a test render to see if they render, even if they preview invisible.

If they STILL show invisible--close down Poser and re-open.  If it's Poser 7--it IS a bug.  Some few rare outfits translate out of sight in random directions. Click on BODY in body-part arrow on the figure palette.  Look at the translation dials after the clothing is conformed.  The settings SHOULD be ZERO.  If they aren't--zero them and see if they appear.

If that doesn't work--I'm out of ideas.  I still have one outfit that disappears when conformed. T__T

I cannot save the world. Only my little piece of it. If we all act together, we can save the world.--Nelson Mandela
An  inconsistent hobgoblin is the fool of little minds
Taking "Just do it" to a whole new level!