Warning: Cover object jeeves:/lun1/vobs/nnmsc/nms3000.vbs:44c24f82.6f3311d2.a4fd.08:00:09:87:72:39 for 0x800010dc not found in VOB
These errors found in the view_log are most often caused when a derived object that has been winked into view1 is rmdo'ed from the vob by view2. Directories being rmelem'ed from the vob can also have this effect.
A cover object is a "mask" in the view that is used to modify what a vob-object looks like. If the vob-object goes away and the view's cover-object is accessed, a warning is issued because the vob object can no longer be found.
Be careful not to delete shared derived objects using rmdo. "Unshare" them first by doing a "make clean" in your views, then doing rmdo to remove them from the vob.
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This can also be an indication that someone is using rmdo on the derived object that you are missing.