So I've installed The Sims on my laptop and it's basically been working fine. A few problems I had to take care of, but I figured it out. Now, I'm trying to install some expansion packs, and whenever I have to switch the expansion disc to the original the sims disc, the expansion installation only goes so far before the original the sims disc is ejected, interrupting and halting the installation overall. I've talked to a Parallels representative via chat, but I still need to know why this is happening and what I can do to stop it.