QuickTime with IE, & Netscape in 10.1 isn't working


OK, I have 10.1 installed and running and I now can't see quicktime in IE, or Netscape. When I go to a page with it, I get that the application unexpectedly quit. It works in Mozilla. I haven't downloaded any other browser, but I use IE... So, I tried to find a way to reinstall quicktime, but couldn't find it on apple.com. Any one else having this problem? Is it a bug with 10.1, or is it just on mine? Anyone have a suggestion to fix it?

Thanks in advance...
I'm not having any problems.

...before I tried, I had aready changed one of the QuickTime preferences.
+ Save movies in disk cache