>Something not-so-funny is going on here. After I posted my plea, I poked around in MicroSoft's Knowledge Base and found document #Q139363, which is a bug reference. It states that the setup wizard underestimates actual file sizes, because part of the file is in memory when file size is calculated. They say a work-around of the problem is to disable disk caching by commenting such lines out from the config file. Trouble is, it didn't help. I am copying way less than 200 files to each disk. At the DOS level I get an INT 24 error, and I'm using brand new disks; have even tried several different new disks. Microsoft also mentioned they're looking into the problem. I have even selected the 1.2MB option, but I get the same ACCESS DENIED message. I'm stumped.

Other ideas, since I went through this too...
Perhaps the byte counter is off in the setup, like the MS doc says. Anyway, have you tried analyzing this by copying files manually to see how close you get before the error? Maybe that would shed some light...Maybe you can manually move an image file or two to get the setup to work, also?