We found the problem when both my friend and I ran hdutil imageinfo filename.dmg | grep Format. If I did a hdutil attach filename.dmg, it would give the following error: completed.calculated CRC32 $ABCDEF12, expected CRC32 $00000000Finishing.hdiutil: attach failed - corrupt imageNote the expected CRC32 checksum was zero (the calculated value was an eight-digit hex, represented here by the simple ABCDEF12 string), which is certainly unlikely. When I tried dragging the file into Disk Utility's left section, and then doing a verify on the dmg file, I'd get a Verify volume failed with error Invalid request (-9998) message. We compared md5sums of the file, and they were identical. I checked with a friend of mine on another Mac OS X system, and he downloaded and opened the dmg file with no problem. I downloaded it from several other locations, but the file still refused to open.
dmg (disk image) file: I kept getting a corrupt dmg file message when trying to open it. I recently ran into a problem trying to open a downloaded.
