Unless using network pane or ‘edit’ function to select the object (the most recent one being a box used as a shelf in a shelving unit), i cannot see the object, an I have tried to set footprint flag and stuff, but nothing works.

Also, when i press ‘u’ to get out of the object, only the back of the shelving unit is appearing! :?

check what direction your normals are pointing…
and use a different mode than shaded…

Uhhh…..changing to wireframe/other than shaded doesn't work…

Normals :?:

and does anyone else not see the ‘missing shelf’ image??> :?

Only the geometry from the SOP that has the display (blue) flag turned on is exported out of the object. Create a Merge SOP, connect the two pieces of geoemtry to the Merge SOP's input and then click on the display flag of the Merge SOP.

oh yeeeeahh….i forgot to merge that one ops: oh well!
Thank you very much!