I tried to download QT5 Preview a while ago, but about 90% through the install, I got a dialog box saying I was missing some (QT?) components, and the preview couldn't be installed. I believe the choices were quit or try later. In any case, now whenever I boot or restart, my initial screen includes a dialog box informing me that "Some of your QuickTime software failed to load because it is out of date. You can fix this problem by updating to the latest verson." The button choices are "Quit" or "Update Now".
If I choose "Update Now", I quickly get a dialog box saying "Some necessary information could not be found on the QT server. Please try again later". FINE, but in the meantime I get that blasted "QT s/w failed to load" box every restart. HOW CAN I GET RID OF IT?
There's nothing new in the StartUp folder/items. I've run the automatic Software Update routine just yesterday, and been advised that everything has been updated.
Whatever! I just don't want to see that stupid message anymore. Or get into that endless loop it leads to.