Disk image will not mount 10.0.2

Holmes

Humble God
I've ran software update a few times, and everytime it tells me it wasn't successfull after completing the download. I tried using IE to download, but Disk image will not mount the 10.0.2 image. I tried downloading 10.0.1 again, but it will not mount that image either. Both images are .dmg files. Disk copy will mount .img and .smi files still. Anybody know how to fix this problem?
 
Top