I ran the OS 9 installer, then was doing a few other things around the apartment and when I got back, it had crashed. So I reopened it, reran it, and it seems all the files had successfully been copied, so all it effectively did the second time was prompt me to create shortcuts.
I haven't extensively tested it beyond the initial parts of the training room because I didn't have time. I didn't notice anything odd; it seemed to run just fine.
I ran the OS 9 installer, then was doing a few other things around the apartment and when I got back, it had crashed. So I reopened it, reran it, and it seems all the files had successfully been copied, so all it effectively did the second time was prompt me to create shortcuts.
I haven't extensively tested it beyond the initial parts of the training room because I didn't have time. I didn't notice anything odd; it seemed to run just fine.