Ok. I didn't realize that that many MAME's are bad. I have over 10,000 and it loaded 2842 so it looks like I'm good then. Thanks.
I see what you are talking about N64 games having different names, I've noticed that before and it actually does load both. I went through and deleted all duplicates. There are a few games that are not duplicates and will not load. I will play around with it some more.
Thanks for your response and help.