Ah, if you're only seeing the arrows or the bounding box in one of your four views, your cloud may well have been placed way the heck off in one direction or other.  (This happens often if you drag an item into the perspective view window.

Select the item and set its location to 0, 0, 0 -- or at the center of the Carrara Universe.  Then you should be able to find it in all three views and position it where you like. 

In your picture posted above, it looks like your cloud may well be VERY distant in the view because I can't see any bounding box for the cloud.  Check its position; I bet you'll find it's far away.

At least I hope so.  Or I'll feel somewhat foolish!

 - Dex