iTunes/Ext Hard Drive/Time Capsule issue

[mac2thefuture]

Hello,

I have both iTunes and iPhoto on an external drive and they're hooked up to my network via a Time capsule.

Yesterday all was well, i could select items from within iTunes and view footage/music. Now, I get the following error message (but it does show all the content of iTunes).

iPhoto does work fine??

Any suggestions please.

 

[mac2thefuture]

on changing hard drive i must have affected the path or something. I can play content direct from the iTunes folder on the ext hard drive but not direct - again, any suggestions?
Thanks