Compressor crashes and gets error
I did what you suggested, and the first time I ran it the application and computer froze while I was defragmenting. So I ran it again, and it seemed to finish, but at the end I got an error message stating that it could not complete, and I should run disk tools to defragment the image.
After running disktools, my disk image is back to the original size that it was before I ran the compressor the first time.
So I am not sure that it really did anything.
i started with about 7.5gb in size, ran it the first time under RC2 and it jumped to 8.5 GB
Ran it again today as described above and its now back to 7.5GB