...Isaaru wasn't in Zanarkand in Chapter 5? I went all the way to the dome and all it said was that he closed it. Isn't he supposed to be standing there?

Also, I was in Clasko's Ranch a gazillion times during Chapter 3, and Shinra never installed a CommSphere there. I missed out on viewing those transmissions during Chapter 4. That's going to screw my 100%, isn't it?

How do I correct these glitches next time I play through?