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I don't think the Win/MAC TIF-version is the problem. As I said, using Windows Explorer, I was able to see the file list and copy the files from the DVD to the hard drive with no problem, then open them in PS/CS with no problem. It was only when I tried to open them in PS directly from the DVD that the problem occured. The files are about 35mb.
Andy Pearlman Studio
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Ask the person what software he used to burn the disk. There are 2 likely alternatives:
1. He used the built in 'desktop" burning that Mac OSX has. (put in blank CD, It shows on desktop, drag files to disk icon, burn)
2. He used "Toast" the most popular CD authoring software on the Mac platform.
I would bet that the CD giving you the problems was burned the first way.
I work in prepress for a commercial printer, so I deal with a LOT of burned disks, and 9 times out of 10, if we have issues with a burned disk, its because some form of "desktop" burning was used, rather than a standalone Authoring Application. The problem seems to be getting worse as everyone and their dog wants to add "desktop" burning, and eliminate using an application to author the disk. From the Mac side, using "Toast" to burn disks, has NEVER resulted in a disk that caused problems for a PC, in my experience. The defualt settings for the program create very bi-platform compatable disks.
Having said that however, I make it a habit to NOT ever try to open files directly from the CD, if I can avoid it, especially Large files. I always copy them to my hard drive first. Just seems to be faster overall, and create fewer problems. (I get a lot of sales reps wanting to know "whats on this disc" all day long"