I am having a similar problem, and am also unable to delete a File Geodatabase Raster Dataset. I actually intended to rename it initially, but this did not work. It appears to be corrupted, as it will not load into an .mxd or allow me to see its Properties (using Arc Catalog). I initially removed the raster from the Arc Map document, re-saved the .mxd, and closed the .mxd before attempting to rename the raster. Next, I tried closing and re-opening Arc Catalog before deleting it. Then, I logged off the PC, logged back on and tried to delete it. Finally, I have now powered down the PC, powered back up, and am still not able to delete the raster. I am attaching a copy of the error message here: [ATTACH=CONFIG]19133[/ATTACH]
I am using Windows 7, ArcGIS 10 Build 4400 (SP5) Arc Info license. Help please!
Eric