Latest Flash continues to crash

I've spent the last hour trying to get either Firefox or Safari to run a flash site since I updated to the most recent Flash an hour ago. Your "5 easy steps" aren't working. I've uninstalled and reinstalled every bit of software pertaining to web use to no avail. I'm not computer illiterate. I won't claim to be a Steve Jobs or anything, but I do know what I'm doing. Or, so I thought. I can't figure this out and I need flash for my work. So please don't send me advice along the lines of, "First, make sure your computer is plugged in and turned on."