I created a mosaic dataset from 59 DEMs, edited the minPS and max PS for each to be 0 and 100 respectively, set the properties to mosaic by the lowPS attribute, and bumped up the defaults for Maximum Size of Requests, Maximum Number of Rasters per Mosaic, Maximum number of Records Returned, and Maximum number of Items Downloadable Per Request.
The resulting mosaic dataset and a referenced hillshade mosaic dataset display fine in ArcGIS Desktop, and the mosaic dataset works fine for elevation in ArcGlobe, but it doesn't appear - doesn't even try to appear in arcglobe as imagery, whether I use the DEM and add it a second time as imagery, or if I add the referenced mosaic hillshade. If I clip the mosaic and save it as a tif, it displays just fine.
Any thoughts?