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System suite 8 will only work on Vista and below, and System suite 9 will only work on windows 7 and below.
Since you are using windows 10, you would want to use at least SS13, Since even system suite 11 is only for windows 7 and below. You can get a copy of system suite 14 here if you want to run it on windows 8 or 10. http://amzn.to/2ad3dXV
As far as why you dont have a SS8 or SS9 disk, I couldnt say for certain. It may be that you paid for download copies and not cd's, or the disks may have been misplaced.
If you have further questions youre welcome to reply.
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