Here's my error/problem message:
When I plug my iphone into my computer and click sync music i get the following message: "Are you sure you want to remove existing music, movies, TV shows, books, and tones from this iPhone and sync with this iTunes library?" When I cancel, my sync options remain greyed out.
To try to retrace my footsteps, my startup disc was almost full, so I began moving items to the external hard drive. I dropped the whole itunes folder into the external hd and it copied more than 2800 songs. I did the same with pics and other items thinking I would remove them to make space and rotate in songs and pics from the external hd as I wanted to.
I felt the music was important, so I pulled the entire folder back and dropped it in, and I think it now reads it as a different folder or library or something...
Maybe that will help explain... Thanks for your advice.