iTunes has never been able to open libraries that've been used with newer versions of iTunes, so any version less than 10.5 won't be able to open a library used with version 10.5.
You may be able to delete the library file and rebuild by importing the XML file next to your old library.
You can export your playlist as an XML and then re-import it, but you'll lose some information in the process.
like what?
this beta is annoying
Which is probably why most people aren't using it on their primary machines.
i'm so sick of responses like that, just keep them to yourself. i know it's a beta, i know what machine i was installing it on, i knew all the risks.
iTunes has never been able to open libraries that've been used with newer versions of iTunes, so any version less than 10.5 won't be able to open a library used with version 10.5.
You may be able to delete the library file and rebuild by importing the XML file next to your old library.
like what?
this beta is annoying